diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKotlinFragmentBuilder.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKotlinFragmentBuilder.kt
index ca4fb37eb0b..16ee5a8e540 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKotlinFragmentBuilder.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/kpm/idea/IdeaKotlinFragmentBuilder.kt
@@ -21,10 +21,6 @@ internal fun KotlinGradleFragment.toIdeaKotlinFragment(
     }
 }
 
-internal fun KotlinGradleVariant.toIdeaKotlinVariant(
-    cache: FragmentInterner = mutableMapOf()
-): IdeaKotlinVariant = toIdeaKotlinVariant(cache) as IdeaKotlinVariant
-
 private fun KotlinGradleFragment.buildIdeaKotlinFragment(cache: FragmentInterner): IdeaKotlinFragment {
     return IdeaKotlinFragmentImpl(
         name = name,