diff --git a/sql/sql_olap.cc b/sql/sql_olap.cc
index fa4d23805f4..930e052ab90 100644
--- a/sql/sql_olap.cc
+++ b/sql/sql_olap.cc
@@ -46,7 +46,7 @@ static int make_new_olap_select(LEX *lex, SELECT_LEX *select_lex, List<Item> new
 {
   THD	*thd=current_thd;
   Item *item, *new_item;
-  Item_string *constant= new Item_string("ALL",3);
+  Item_null *constant= new Item_null("ALL");
 
   SELECT_LEX *new_select = (SELECT_LEX *) thd->memdup((char*) select_lex, sizeof(*select_lex));
   if (!new_select)
diff --git a/sql/sql_select.cc b/sql/sql_select.cc
index 2f12d7d1012..adfccfce68a 100644
--- a/sql/sql_select.cc
+++ b/sql/sql_select.cc
@@ -4040,9 +4040,12 @@ static bool create_myisam_tmp_table(TABLE *table,TMP_TABLE_PARAM *param,
   }
   MI_CREATE_INFO create_info;
   bzero((char*) &create_info,sizeof(create_info));
-  if ((options & (OPTION_BIG_TABLES | SELECT_SMALL_RESULT)) ==
-      OPTION_BIG_TABLES)
+  if ((options & (OPTION_BIG_TABLES | SELECT_SMALL_RESULT)) !=
+      SELECT_SMALL_RESULT)
+  {
     create_info.data_file_length= ~(ulonglong) 0;
+    create_info.max_rows= ~(ulonglong) 0;
+  }
 
   if ((error=mi_create(table->real_name,table->keys,&keydef,
 		       (uint) (param->recinfo-param->start_recinfo),