diff --git a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirBlackBoxCodegenBasedTestGenerated.java b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirBlackBoxCodegenBasedTestGenerated.java
index eb363d1c8dc..d76c2b93551 100644
--- a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirBlackBoxCodegenBasedTestGenerated.java
+++ b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirBlackBoxCodegenBasedTestGenerated.java
@@ -35313,6 +35313,12 @@ public class LLFirBlackBoxCodegenBasedTestGenerated extends AbstractLLFirBlackBo
                 runTest("compiler/testData/codegen/box/multiplatform/k2/anonymousObjectAndSpecificImplementationInDeserializedIr.kt");
             }
 
+            @Test
+            @TestMetadata("covariantOverrideInActual.kt")
+            public void testCovariantOverrideInActual() throws Exception {
+                runTest("compiler/testData/codegen/box/multiplatform/k2/covariantOverrideInActual.kt");
+            }
+
             @Test
             @TestMetadata("dataClassInCommonAndPlatform.kt")
             public void testDataClassInCommonAndPlatform() throws Exception {
diff --git a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirReversedBlackBoxCodegenBasedTestGenerated.java b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirReversedBlackBoxCodegenBasedTestGenerated.java
index b5b141cc46b..d971681b9ba 100644
--- a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirReversedBlackBoxCodegenBasedTestGenerated.java
+++ b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirReversedBlackBoxCodegenBasedTestGenerated.java
@@ -35313,6 +35313,12 @@ public class LLFirReversedBlackBoxCodegenBasedTestGenerated extends AbstractLLFi
                 runTest("compiler/testData/codegen/box/multiplatform/k2/anonymousObjectAndSpecificImplementationInDeserializedIr.kt");
             }
 
+            @Test
+            @TestMetadata("covariantOverrideInActual.kt")
+            public void testCovariantOverrideInActual() throws Exception {
+                runTest("compiler/testData/codegen/box/multiplatform/k2/covariantOverrideInActual.kt");
+            }
+
             @Test
             @TestMetadata("dataClassInCommonAndPlatform.kt")
             public void testDataClassInCommonAndPlatform() throws Exception {
diff --git a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java
index 97ab9f50453..69d3628af38 100644
--- a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java
+++ b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java
@@ -34898,6 +34898,12 @@ public class FirLightTreeBlackBoxCodegenTestGenerated extends AbstractFirLightTr
                 runTest("compiler/testData/codegen/box/multiplatform/k2/anonymousObjectAndSpecificImplementationInDeserializedIr.kt");
             }
 
+            @Test
+            @TestMetadata("covariantOverrideInActual.kt")
+            public void testCovariantOverrideInActual() throws Exception {
+                runTest("compiler/testData/codegen/box/multiplatform/k2/covariantOverrideInActual.kt");
+            }
+
             @Test
             @TestMetadata("dataClassInCommonAndPlatform.kt")
             public void testDataClassInCommonAndPlatform() throws Exception {
diff --git a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenWithIrFakeOverrideGeneratorTestGenerated.java b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenWithIrFakeOverrideGeneratorTestGenerated.java
index b18bf64f404..471f937cf3f 100644
--- a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenWithIrFakeOverrideGeneratorTestGenerated.java
+++ b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenWithIrFakeOverrideGeneratorTestGenerated.java
@@ -34898,6 +34898,12 @@ public class FirLightTreeBlackBoxCodegenWithIrFakeOverrideGeneratorTestGenerated
                 runTest("compiler/testData/codegen/box/multiplatform/k2/anonymousObjectAndSpecificImplementationInDeserializedIr.kt");
             }
 
+            @Test
+            @TestMetadata("covariantOverrideInActual.kt")
+            public void testCovariantOverrideInActual() throws Exception {
+                runTest("compiler/testData/codegen/box/multiplatform/k2/covariantOverrideInActual.kt");
+            }
+
             @Test
             @TestMetadata("dataClassInCommonAndPlatform.kt")
             public void testDataClassInCommonAndPlatform() throws Exception {
diff --git a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java
index f5bd985e660..e5af50f22d4 100644
--- a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java
+++ b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java
@@ -34898,6 +34898,12 @@ public class FirPsiBlackBoxCodegenTestGenerated extends AbstractFirPsiBlackBoxCo
                 runTest("compiler/testData/codegen/box/multiplatform/k2/anonymousObjectAndSpecificImplementationInDeserializedIr.kt");
             }
 
+            @Test
+            @TestMetadata("covariantOverrideInActual.kt")
+            public void testCovariantOverrideInActual() throws Exception {
+                runTest("compiler/testData/codegen/box/multiplatform/k2/covariantOverrideInActual.kt");
+            }
+
             @Test
             @TestMetadata("dataClassInCommonAndPlatform.kt")
             public void testDataClassInCommonAndPlatform() throws Exception {
diff --git a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/ExpectActualLinker.kt b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/ExpectActualLinker.kt
index 00fdd7f31cc..fa923bab4ce 100644
--- a/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/ExpectActualLinker.kt
+++ b/compiler/ir/ir.actualization/src/main/kotlin/org/jetbrains/kotlin/backend/common/actualizer/ExpectActualLinker.kt
@@ -95,6 +95,7 @@ internal open class ActualizerVisitor(private val symbolRemapper: SymbolRemapper
 
     override fun visitClass(declaration: IrClass) =
         declaration.also {
+            if (declaration.isExpect) return@also
             it.superTypes = it.superTypes.map { superType -> superType.remapType() }
             it.transformChildren(this, null)
             it.transformAnnotations(declaration)
@@ -104,6 +105,7 @@ internal open class ActualizerVisitor(private val symbolRemapper: SymbolRemapper
         }
 
     override fun visitSimpleFunction(declaration: IrSimpleFunction) = (visitFunction(declaration) as IrSimpleFunction).also {
+        if (declaration.isExpect) return@also
         it.overriddenSymbols = it.overriddenSymbols.memoryOptimizedMap { symbol ->
             symbolRemapper.getReferencedFunction(symbol) as IrSimpleFunctionSymbol
         }
@@ -113,6 +115,7 @@ internal open class ActualizerVisitor(private val symbolRemapper: SymbolRemapper
 
     override fun visitFunction(declaration: IrFunction) =
         declaration.also {
+            if (declaration.isExpect) return@also
             it.returnType = it.returnType.remapType()
             it.transformChildren(this, null)
             it.transformAnnotations(declaration)
@@ -120,6 +123,7 @@ internal open class ActualizerVisitor(private val symbolRemapper: SymbolRemapper
 
     override fun visitProperty(declaration: IrProperty) =
         declaration.also {
+            if (declaration.isExpect) return@also
             it.transformChildren(this, null)
             it.overriddenSymbols = it.overriddenSymbols.memoryOptimizedMap { symbol ->
                 symbolRemapper.getReferencedProperty(symbol)
diff --git a/compiler/testData/codegen/box/multiplatform/k2/covariantOverrideInActual.kt b/compiler/testData/codegen/box/multiplatform/k2/covariantOverrideInActual.kt
new file mode 100644
index 00000000000..9b3b3a62dff
--- /dev/null
+++ b/compiler/testData/codegen/box/multiplatform/k2/covariantOverrideInActual.kt
@@ -0,0 +1,24 @@
+// LANGUAGE: +MultiPlatformProjects
+
+// MODULE: lib-common
+// FILE: common.kt
+
+
+abstract expect class Base
+expect class Child : Base
+
+
+// MODULE: lib()()(lib-common)
+// FILE: platform.kt
+
+actual abstract class Base() {
+    abstract fun foo(): Any
+}
+
+actual class Child: Base() {
+    override fun foo(): String = "OK"
+}
+
+fun box(): String {
+    return Child().foo()
+}
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java
index 2052c49e5c3..561608cb8fb 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java
@@ -24464,6 +24464,12 @@ public class FirJsCodegenBoxTestGenerated extends AbstractFirJsCodegenBoxTest {
                 runTest("compiler/testData/codegen/box/multiplatform/k2/anonymousObjectAndSpecificImplementationInDeserializedIr.kt");
             }
 
+            @Test
+            @TestMetadata("covariantOverrideInActual.kt")
+            public void testCovariantOverrideInActual() throws Exception {
+                runTest("compiler/testData/codegen/box/multiplatform/k2/covariantOverrideInActual.kt");
+            }
+
             @Test
             @TestMetadata("dataClassInCommonAndPlatform.kt")
             public void testDataClassInCommonAndPlatform() throws Exception {
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsES6CodegenBoxTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsES6CodegenBoxTestGenerated.java
index 04bc9c73b3b..a43c48745e7 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsES6CodegenBoxTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsES6CodegenBoxTestGenerated.java
@@ -24464,6 +24464,12 @@ public class FirJsES6CodegenBoxTestGenerated extends AbstractFirJsES6CodegenBoxT
                 runTest("compiler/testData/codegen/box/multiplatform/k2/anonymousObjectAndSpecificImplementationInDeserializedIr.kt");
             }
 
+            @Test
+            @TestMetadata("covariantOverrideInActual.kt")
+            public void testCovariantOverrideInActual() throws Exception {
+                runTest("compiler/testData/codegen/box/multiplatform/k2/covariantOverrideInActual.kt");
+            }
+
             @Test
             @TestMetadata("dataClassInCommonAndPlatform.kt")
             public void testDataClassInCommonAndPlatform() throws Exception {
diff --git a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestGenerated.java b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestGenerated.java
index 592bfc1760d..d5be8c3fb3a 100644
--- a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestGenerated.java
+++ b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestGenerated.java
@@ -27829,6 +27829,12 @@ public class FirNativeCodegenBoxTestGenerated extends AbstractNativeCodegenBoxTe
                     runTest("compiler/testData/codegen/box/multiplatform/k2/anonymousObjectAndSpecificImplementationInDeserializedIr.kt");
                 }
 
+                @Test
+                @TestMetadata("covariantOverrideInActual.kt")
+                public void testCovariantOverrideInActual() throws Exception {
+                    runTest("compiler/testData/codegen/box/multiplatform/k2/covariantOverrideInActual.kt");
+                }
+
                 @Test
                 @TestMetadata("dataClassInCommonAndPlatform.kt")
                 public void testDataClassInCommonAndPlatform() throws Exception {
diff --git a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestNoPLGenerated.java b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestNoPLGenerated.java
index 4fe49c048d2..d41aa9ca945 100644
--- a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestNoPLGenerated.java
+++ b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/test/blackbox/FirNativeCodegenBoxTestNoPLGenerated.java
@@ -28461,6 +28461,12 @@ public class FirNativeCodegenBoxTestNoPLGenerated extends AbstractNativeCodegenB
                     runTest("compiler/testData/codegen/box/multiplatform/k2/anonymousObjectAndSpecificImplementationInDeserializedIr.kt");
                 }
 
+                @Test
+                @TestMetadata("covariantOverrideInActual.kt")
+                public void testCovariantOverrideInActual() throws Exception {
+                    runTest("compiler/testData/codegen/box/multiplatform/k2/covariantOverrideInActual.kt");
+                }
+
                 @Test
                 @TestMetadata("dataClassInCommonAndPlatform.kt")
                 public void testDataClassInCommonAndPlatform() throws Exception {
diff --git a/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/FirWasmCodegenBoxTestGenerated.java b/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/FirWasmCodegenBoxTestGenerated.java
index b3a7c321174..ce846659d53 100644
--- a/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/FirWasmCodegenBoxTestGenerated.java
+++ b/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/FirWasmCodegenBoxTestGenerated.java
@@ -24434,6 +24434,12 @@ public class FirWasmCodegenBoxTestGenerated extends AbstractFirWasmCodegenBoxTes
                 runTest("compiler/testData/codegen/box/multiplatform/k2/anonymousObjectAndSpecificImplementationInDeserializedIr.kt");
             }
 
+            @Test
+            @TestMetadata("covariantOverrideInActual.kt")
+            public void testCovariantOverrideInActual() throws Exception {
+                runTest("compiler/testData/codegen/box/multiplatform/k2/covariantOverrideInActual.kt");
+            }
+
             @Test
             @TestMetadata("dataClassInCommonAndPlatform.kt")
             public void testDataClassInCommonAndPlatform() throws Exception {