diff --git a/sql/item_func.cc b/sql/item_func.cc
index 89d5438..360f794 100644
--- a/sql/item_func.cc
+++ b/sql/item_func.cc
@@ -1424,7 +1424,7 @@ void Item_func_additive_op::result_precision()
   subtraction of UNSIGNED BIGINT to return negative values.
 */
 
-void Item_func_minus::fix_length_and_dec()
+void Item_func_additive_op::fix_length_and_dec()
 {
   Item_num_op::fix_length_and_dec();
   if (unsigned_flag &&
diff --git a/sql/item_func.h b/sql/item_func.h
index bd2cc4e..05e357b 100644
--- a/sql/item_func.h
+++ b/sql/item_func.h
@@ -592,6 +592,7 @@ public:
   Item_func_additive_op(Item *a,Item *b) :Item_num_op(a,b) {}
   void result_precision();
   bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
+  void fix_length_and_dec();
 };
 
 
@@ -613,7 +614,6 @@ public:
   longlong int_op();
   double real_op();
   my_decimal *decimal_op(my_decimal *);
-  void fix_length_and_dec();
 };