diff --git a/sql/item_create.h b/sql/item_create.h
index 25a75a22163..166e173b3c2 100644
--- a/sql/item_create.h
+++ b/sql/item_create.h
@@ -304,7 +304,7 @@ class Native_functions_hash: public HASH
 public:
   Native_functions_hash()
   {
-    bzero(this, sizeof(*this));
+    bzero((void*) this, sizeof(*this));
   }
   ~Native_functions_hash()
   {