diff --git a/core/descriptors/src/org/jetbrains/kotlin/types/AbstractTypeConstructor.kt b/core/descriptors/src/org/jetbrains/kotlin/types/AbstractTypeConstructor.kt
index d3a4e02c62f..b77c41f87a0 100644
--- a/core/descriptors/src/org/jetbrains/kotlin/types/AbstractTypeConstructor.kt
+++ b/core/descriptors/src/org/jetbrains/kotlin/types/AbstractTypeConstructor.kt
@@ -153,7 +153,8 @@ abstract class AbstractTypeConstructor(storageManager: StorageManager) : TypeCon
         if (other !is TypeConstructor) return false
 
         // performance optimization: getFqName is slow method
-        if (other.hashCode() != hashCode()) return false
+        // Cast to Any is needed as a workaround for KT-45008.
+        if ((other as Any).hashCode() != hashCode()) return false
 
         // Sometimes we can get two classes from different modules with different counts of type parameters.
         // To avoid problems in type checker we suppose that it is different type constructors.