diff --git a/tests/zgrep-signal b/tests/zgrep-signal
index 13783ef..4f7f9ef 100755
--- a/tests/zgrep-signal
+++ b/tests/zgrep-signal
@@ -58,7 +58,9 @@ test 128 -lt $signal_status ||

 fail=0

-write_to_dangling_pipe zgrep a f.gz f.gz
+write_to_dangling_pipe sh -x zgrep a f.gz f.gz 2> junk
 test $? -eq $signal_status || fail=1
+cat junk
+echo fooooooooooooooooooooooooooooo

 Exit $fail