diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/StackValue.java b/compiler/backend/src/org/jetbrains/kotlin/codegen/StackValue.java
index c3f46b0a4eb..21678617508 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/StackValue.java
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/StackValue.java
@@ -15,6 +15,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.kotlin.builtins.KotlinBuiltIns;
 import org.jetbrains.kotlin.builtins.PrimitiveType;
+import org.jetbrains.kotlin.builtins.UnsignedTypes;
 import org.jetbrains.kotlin.codegen.binding.CodegenBinding;
 import org.jetbrains.kotlin.codegen.coroutines.CoroutineCodegenUtilKt;
 import org.jetbrains.kotlin.codegen.intrinsics.IntrinsicMethods;
@@ -794,8 +795,11 @@ public abstract class StackValue {
             ResolvedCall resolvedCall,
             @NotNull ExpressionCodegen codegen
     ) {
-        if (stackValue instanceof StackValue.Local && Type.INT_TYPE == stackValue.type) {
-            return preIncrementForLocalVar(((StackValue.Local) stackValue).index, delta, stackValue.kotlinType);
+        KotlinType kotlinType = stackValue.kotlinType;
+        if (stackValue instanceof StackValue.Local && Type.INT_TYPE == stackValue.type &&
+            kotlinType != null && KotlinBuiltIns.isPrimitiveType(kotlinType)
+        ) {
+            return preIncrementForLocalVar(((StackValue.Local) stackValue).index, delta, kotlinType);
         }
         return new PrefixIncrement(type, stackValue, resolvedCall, codegen);
     }
diff --git a/compiler/testData/codegen/box/inlineClasses/kt33119.kt b/compiler/testData/codegen/box/inlineClasses/kt33119.kt
new file mode 100644
index 00000000000..0eff331a2f7
--- /dev/null
+++ b/compiler/testData/codegen/box/inlineClasses/kt33119.kt
@@ -0,0 +1,18 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+
+inline class WrappingInt(val value: Int) {
+    operator fun inc(): WrappingInt = plus(1)
+    operator fun plus(num: Int): WrappingInt = WrappingInt((value + num) and 0xFFFF)
+}
+
+fun box(): String {
+    var x = WrappingInt(65535)
+    x++
+    if (x.value != 0) throw AssertionError("x++: ${x.value}")
+
+    var y = WrappingInt(65535)
+    ++y
+    if (y.value != 0) throw AssertionError("++y: ${y.value}")
+
+    return "OK"
+}
\ No newline at end of file
diff --git a/compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java b/compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java
index 0e0680ff86e..8c20e8e2916 100644
--- a/compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java
@@ -13408,6 +13408,11 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/inlineClasses/kt28920_javaPrimitiveType.kt");
         }
 
+        @TestMetadata("kt33119.kt")
+        public void testKt33119() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/kt33119.kt");
+        }
+
         @TestMetadata("kt34268.kt")
         public void testKt34268() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/kt34268.kt");
diff --git a/compiler/tests/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java b/compiler/tests/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
index 175102424c8..5835c3e82ff 100644
--- a/compiler/tests/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
@@ -13413,6 +13413,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/inlineClasses/kt28920_javaPrimitiveType.kt");
         }
 
+        @TestMetadata("kt33119.kt")
+        public void testKt33119() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/kt33119.kt");
+        }
+
         @TestMetadata("kt34268.kt")
         public void testKt34268() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/kt34268.kt");
diff --git a/compiler/tests/org/jetbrains/kotlin/codegen/ir/FirBlackBoxCodegenTestGenerated.java b/compiler/tests/org/jetbrains/kotlin/codegen/ir/FirBlackBoxCodegenTestGenerated.java
index a382e58376e..7aeeaff7e41 100644
--- a/compiler/tests/org/jetbrains/kotlin/codegen/ir/FirBlackBoxCodegenTestGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/codegen/ir/FirBlackBoxCodegenTestGenerated.java
@@ -12278,6 +12278,11 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/inlineClasses/kt28920_javaPrimitiveType.kt");
         }
 
+        @TestMetadata("kt33119.kt")
+        public void testKt33119() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/kt33119.kt");
+        }
+
         @TestMetadata("kt34268.kt")
         public void testKt34268() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/kt34268.kt");
diff --git a/compiler/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java b/compiler/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java
index 1006c1a1f24..12c88141820 100644
--- a/compiler/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/codegen/ir/IrBlackBoxCodegenTestGenerated.java
@@ -12278,6 +12278,11 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/inlineClasses/kt28920_javaPrimitiveType.kt");
         }
 
+        @TestMetadata("kt33119.kt")
+        public void testKt33119() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/kt33119.kt");
+        }
+
         @TestMetadata("kt34268.kt")
         public void testKt34268() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/kt34268.kt");
diff --git a/core/descriptors/src/org/jetbrains/kotlin/builtins/UnsignedType.kt b/core/descriptors/src/org/jetbrains/kotlin/builtins/UnsignedType.kt
index b1fd28c86c2..d25c932f4f4 100644
--- a/core/descriptors/src/org/jetbrains/kotlin/builtins/UnsignedType.kt
+++ b/core/descriptors/src/org/jetbrains/kotlin/builtins/UnsignedType.kt
@@ -43,6 +43,7 @@ object UnsignedTypes {
     fun getUnsignedClassIdByArrayClassId(arrayClassId: ClassId): ClassId? = arrayClassIdToUnsignedClassId[arrayClassId]
     fun getUnsignedArrayClassIdByUnsignedClassId(arrayClassId: ClassId): ClassId? = unsignedClassIdToArrayClassId[arrayClassId]
 
+    @JvmStatic
     fun isUnsignedType(type: KotlinType): Boolean {
         if (TypeUtils.noExpectedType(type)) return false
 
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrJsCodegenBoxTestGenerated.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrJsCodegenBoxTestGenerated.java
index 824c0bf0b6f..c7cdb8db0da 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrJsCodegenBoxTestGenerated.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrJsCodegenBoxTestGenerated.java
@@ -10558,6 +10558,11 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/inlineClasses/kt28585.kt");
         }
 
+        @TestMetadata("kt33119.kt")
+        public void testKt33119() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/kt33119.kt");
+        }
+
         @TestMetadata("kt34268.kt")
         public void testKt34268() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/kt34268.kt");
diff --git a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java
index cde042485a7..7fe2cecd323 100644
--- a/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java
+++ b/js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java
@@ -10623,6 +10623,11 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/inlineClasses/kt28585.kt");
         }
 
+        @TestMetadata("kt33119.kt")
+        public void testKt33119() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/kt33119.kt");
+        }
+
         @TestMetadata("kt34268.kt")
         public void testKt34268() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/kt34268.kt");