1 files changed, 3 insertions, 1 deletions
diff --git a/sql/item_sum.cc b/sql/item_sum.cc
index 41f0dd6496b..acc2d22c57c 100644
--- a/sql/item_sum.cc
+++ b/sql/item_sum.cc
@@ -1096,8 +1096,10 @@ void Item_sum_avg::fix_length_and_dec()
     f_scale=  args[0]->decimals;
     dec_bin_size= my_decimal_get_binary_size(f_precision, f_scale);
   }
-  else
+  else {
     decimals= min(args[0]->decimals + prec_increment, NOT_FIXED_DEC);
+    max_length= args[0]->max_length + prec_increment;
+  }
 }