diff --git a/js/js.translator/src/org/jetbrains/kotlin/js/translate/utils/utils.kt b/js/js.translator/src/org/jetbrains/kotlin/js/translate/utils/utils.kt
index e4ccbd20e5e..920117d8055 100644
--- a/js/js.translator/src/org/jetbrains/kotlin/js/translate/utils/utils.kt
+++ b/js/js.translator/src/org/jetbrains/kotlin/js/translate/utils/utils.kt
@@ -129,7 +129,9 @@ fun <T, S> List<T>.splitToRanges(classifier: (T) -> S): List<Pair<List<T>, S>> {
 
 fun getReferenceToJsClass(type: KotlinType, context: TranslationContext): JsExpression =
     getReferenceToJsClass(type.constructor.declarationDescriptor, context).also {
-        it.kType = KTypeConstructor(context).createKType(type as SimpleType)
+        if (type is SimpleType) {
+            it.kType = KTypeConstructor(context).createKType(type)
+        }
     }
 
 fun getReferenceToJsClass(classifierDescriptor: ClassifierDescriptor?, context: TranslationContext): JsExpression {