diff --git a/plugins/assign-plugin/assign-plugin.k2/src/org/jetbrains/kotlin/assignment/plugin/k2/FirAssignAnnotationMatchingService.kt b/plugins/assign-plugin/assign-plugin.k2/src/org/jetbrains/kotlin/assignment/plugin/k2/FirAssignAnnotationMatchingService.kt
index 4717203f7e1..78269692c1e 100644
--- a/plugins/assign-plugin/assign-plugin.k2/src/org/jetbrains/kotlin/assignment/plugin/k2/FirAssignAnnotationMatchingService.kt
+++ b/plugins/assign-plugin/assign-plugin.k2/src/org/jetbrains/kotlin/assignment/plugin/k2/FirAssignAnnotationMatchingService.kt
@@ -9,7 +9,7 @@ import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.caches.FirCache
 import org.jetbrains.kotlin.fir.caches.firCachesFactory
 import org.jetbrains.kotlin.fir.caches.getValue
-import org.jetbrains.kotlin.fir.expressions.classId
+import org.jetbrains.kotlin.fir.declarations.toAnnotationClassId
 import org.jetbrains.kotlin.fir.extensions.FirExtensionSessionComponent
 import org.jetbrains.kotlin.fir.extensions.FirExtensionSessionComponent.Factory
 import org.jetbrains.kotlin.fir.resolve.fullyExpandedType
@@ -40,10 +40,10 @@ internal class FirAssignAnnotationMatchingService(
     }
 
     private fun FirRegularClassSymbol.annotated(): Boolean {
-        if (this.annotations.any { it.classId in annotationClassIds }) return true
-        return resolvedSuperTypeRefs.any {
-            val symbol = it.type.fullyExpandedType(session).toRegularClassSymbol(session) ?: return@any false
-            symbol.annotations.any { it.classId in annotationClassIds }
+        if (this.annotations.any { it.toAnnotationClassId(session) in annotationClassIds }) return true
+        return resolvedSuperTypeRefs.any { superTypeRef ->
+            val symbol = superTypeRef.type.fullyExpandedType(session).toRegularClassSymbol(session) ?: return@any false
+            symbol.annotations.any { it.toAnnotationClassId(session) in annotationClassIds }
         }
     }
 }
diff --git a/plugins/assign-plugin/testData/codegen/typealias.kt b/plugins/assign-plugin/testData/codegen/typealias.kt
new file mode 100644
index 00000000000..446d84381ca
--- /dev/null
+++ b/plugins/assign-plugin/testData/codegen/typealias.kt
@@ -0,0 +1,61 @@
+// FILE: test.kt
+annotation class ValueContainer
+
+typealias VC = ValueContainer
+
+@VC
+interface KotlinProperty<T> {
+    fun assign(argument: T);
+    fun get(): T;
+}
+
+data class KotlinStringProperty(private var v: String): KotlinProperty<String> {
+    override fun assign(v: String) {
+        this.v = v
+    }
+    override fun get() = this.v
+}
+
+@VC
+data class KotlinClassStringProperty(private var v: String) {
+    fun assign(v: String) {
+        this.v = v
+    }
+    fun get(): String {
+        return v
+    }
+}
+
+fun `should work with annotation on Kotlin interface`(): String {
+    data class Task(val input: KotlinStringProperty)
+    val task = Task(KotlinStringProperty("Fail"))
+    task.input = "OK"
+
+    return if (task.input.get() != "OK") {
+        "Fail: ${task.input.get()}"
+    } else {
+        "OK"
+    }
+}
+
+fun `should work with annotation on Kotlin class`(): String {
+    data class Task(val input: KotlinClassStringProperty)
+    val task = Task(KotlinClassStringProperty("Fail"))
+    task.input = "OK"
+
+    return if (task.input.get() != "OK") {
+        "Fail: ${task.input.get()}"
+    } else {
+        "OK"
+    }
+}
+
+fun box(): String {
+    var result = `should work with annotation on Kotlin interface`()
+    if (result != "OK") return result
+
+    result = `should work with annotation on Kotlin class`()
+    if (result != "OK") return result
+
+    return "OK"
+}
diff --git a/plugins/assign-plugin/tests-gen/org/jetbrains/kotlin/assignment/plugin/FirBlackBoxCodegenTestForAssignmentPluginGenerated.java b/plugins/assign-plugin/tests-gen/org/jetbrains/kotlin/assignment/plugin/FirBlackBoxCodegenTestForAssignmentPluginGenerated.java
index b91907f20f2..bf5eb1e4cae 100644
--- a/plugins/assign-plugin/tests-gen/org/jetbrains/kotlin/assignment/plugin/FirBlackBoxCodegenTestForAssignmentPluginGenerated.java
+++ b/plugins/assign-plugin/tests-gen/org/jetbrains/kotlin/assignment/plugin/FirBlackBoxCodegenTestForAssignmentPluginGenerated.java
@@ -49,6 +49,12 @@ public class FirBlackBoxCodegenTestForAssignmentPluginGenerated extends Abstract
         runTest("plugins/assign-plugin/testData/codegen/supportedUsage.kt");
     }
 
+    @Test
+    @TestMetadata("typealias.kt")
+    public void testTypealias() throws Exception {
+        runTest("plugins/assign-plugin/testData/codegen/typealias.kt");
+    }
+
     @Test
     @TestMetadata("varBehaviour.kt")
     public void testVarBehaviour() throws Exception {
diff --git a/plugins/assign-plugin/tests-gen/org/jetbrains/kotlin/assignment/plugin/IrBlackBoxCodegenTestAssignmentPluginGenerated.java b/plugins/assign-plugin/tests-gen/org/jetbrains/kotlin/assignment/plugin/IrBlackBoxCodegenTestAssignmentPluginGenerated.java
index 8a5495cdf53..6bca0137b04 100644
--- a/plugins/assign-plugin/tests-gen/org/jetbrains/kotlin/assignment/plugin/IrBlackBoxCodegenTestAssignmentPluginGenerated.java
+++ b/plugins/assign-plugin/tests-gen/org/jetbrains/kotlin/assignment/plugin/IrBlackBoxCodegenTestAssignmentPluginGenerated.java
@@ -49,6 +49,12 @@ public class IrBlackBoxCodegenTestAssignmentPluginGenerated extends AbstractIrBl
         runTest("plugins/assign-plugin/testData/codegen/supportedUsage.kt");
     }
 
+    @Test
+    @TestMetadata("typealias.kt")
+    public void testTypealias() throws Exception {
+        runTest("plugins/assign-plugin/testData/codegen/typealias.kt");
+    }
+
     @Test
     @TestMetadata("varBehaviour.kt")
     public void testVarBehaviour() throws Exception {