diff --git a/mysql-test/t/union.test b/mysql-test/t/union.test
index 929eb3f9534..8cb9d53842f 100644
--- a/mysql-test/t/union.test
+++ b/mysql-test/t/union.test
@@ -1089,6 +1089,7 @@ SELECT * FROM t1 UNION SELECT * FROM t1
   ORDER BY MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE);
 
 --echo # Should not crash
+--sorted_result
 SELECT * FROM t1 UNION SELECT * FROM t1
   ORDER BY MATCH(a) AGAINST ('+abc' IN BOOLEAN MODE);