diff --git a/native/commonizer/src/org/jetbrains/kotlin/commonizer/cir/utils.kt b/native/commonizer/src/org/jetbrains/kotlin/commonizer/cir/utils.kt
index 41c625af6c8..27ee55c7512 100644
--- a/native/commonizer/src/org/jetbrains/kotlin/commonizer/cir/utils.kt
+++ b/native/commonizer/src/org/jetbrains/kotlin/commonizer/cir/utils.kt
@@ -90,17 +90,9 @@ internal fun CirClassOrTypeAliasType.withParentArguments(
     val newIsMarkedNullable = isMarkedNullable || parentIsMarkedNullable
 
     val newArguments = arguments.map { oldArgument ->
-        if (oldArgument is CirRegularTypeProjection) {
-            val oldArgumentType = oldArgument.type
-            if (oldArgumentType is CirTypeParameterType) {
-                when (val parentArgument = parentArguments[oldArgumentType.index]) {
-                    is CirRegularTypeProjection -> if (parentArgument is CirClassOrTypeAliasType) return@map parentArgument
-                    is CirStarTypeProjection -> return@map parentArgument
-                }
-                return@map parentArguments[oldArgumentType.index]
-            }
-        }
-        oldArgument
+        if (oldArgument !is CirRegularTypeProjection) return@map oldArgument
+        if (oldArgument.type !is CirTypeParameterType) return@map oldArgument
+        parentArguments[oldArgument.type.index]
     }
 
     return when (val newUnderlyingType = makeNullableIfNecessary(newIsMarkedNullable).withArguments(newArguments)) {