diff --git a/sql/item.h b/sql/item.h
index 6d20d615d92..f7bae8d3d47 100644
--- a/sql/item.h
+++ b/sql/item.h
@@ -1103,7 +1103,6 @@ public:
     Item::maybe_null= TRUE;
   }
 
-  bool check_partition_func_processor(byte *int_arg) { return FALSE; }
   bool fix_fields(THD *, Item **);
 
   enum Type type() const;