1 files changed, 1 insertions, 1 deletions
diff --git a/sql/protocol.h b/sql/protocol.h
index f98b4cabfed..484f50a5d3c 100644
--- a/sql/protocol.h
+++ b/sql/protocol.h
@@ -90,7 +90,7 @@ protected:
 public:
   THD	 *thd;
   Protocol(THD *thd_arg) { init(thd_arg); }
-  virtual ~Protocol() {}
+  virtual ~Protocol() = default;
   void init(THD* thd_arg);
 
   enum { SEND_NUM_ROWS= 1, SEND_EOF= 2 };