diff --git a/generators/builtins/unsignedTypes.kt b/generators/builtins/unsignedTypes.kt
index 35c731e18a1..fc630447c94 100644
--- a/generators/builtins/unsignedTypes.kt
+++ b/generators/builtins/unsignedTypes.kt
@@ -458,6 +458,7 @@ class UnsignedArrayGenerator(val type: UnsignedType, out: PrintWriter) : BuiltIn
     override fun contains(element: $elementType): Boolean {
         // TODO: Eliminate this check after KT-30016 gets fixed.
         // Currently JS BE does not generate special bridge method for this method.
+        @Suppress("USELESS_CAST")
         if ((element as Any?) !is $elementType) return false
 
         return storage.contains(element.to$storageElementType())