diff --git a/gstlal/tests/firbank_test_01.py b/gstlal/tests/firbank_test_01.py
index cc10d0eca5e67d1beefaa0fe663eddaeb4133375..ad747fd5511292bc2363749eaf17f6205e6aa5fc 100755
--- a/gstlal/tests/firbank_test_01.py
+++ b/gstlal/tests/firbank_test_01.py
@@ -26,7 +26,6 @@
 
 import itertools
 import numpy
-import sys
 from gstlal import pipeparts
 import cmp_nxydumps
 import test_common