diff --git a/tests/pq_test.sh b/tests/pq_test.sh
index 35c4dcb..b6b9f5e 100755
--- a/tests/pq_test.sh
+++ b/tests/pq_test.sh
@@ -1,3 +1,3 @@
 #!/bin/sh
 set -e
-./pq_test | cmp $srcdir/pq_expected.txt /dev/stdin
+./pq_test | cmp $srcdir/pq_expected.txt -