1 files changed, 1 insertions, 1 deletions
diff --git a/sql/mdl.h b/sql/mdl.h
index 44e692b97a0..4cefaa8d6c3 100644
--- a/sql/mdl.h
+++ b/sql/mdl.h
@@ -416,7 +416,7 @@ private:
 private:
   MDL_key(const MDL_key &);                     /* not implemented */
   MDL_key &operator=(const MDL_key &);          /* not implemented */
-  friend my_hash_value_type mdl_hash_function(const CHARSET_INFO *,
+  friend my_hash_value_type mdl_hash_function(CHARSET_INFO *,
                                               const uchar *, size_t);
 };