diff --git a/testing/select.test b/testing/select.test
index 4e3c82404..d3142be3e 100755
--- a/testing/select.test
+++ b/testing/select.test
@@ -523,6 +523,7 @@ if {[info exists ::env(SQLITE_EXEC)] && ($::env(SQLITE_EXEC) eq "scripts/limbo-s
 
       select * from t EXCEPT select * from u UNION select * from v;
     } {x|x
+    y|y
     z|z}
 
     do_execsql_test_on_specific_db {:memory:} select-union-except {