diff --git a/test/test_loopy.py b/test/test_loopy.py
index 7b875ef081ba08159c67c550fe1c7fca193a6684..79d84972795df67d6c1b996c6e844e3d1f658836 100644
--- a/test/test_loopy.py
+++ b/test/test_loopy.py
@@ -2580,7 +2580,7 @@ def test_wildcard_dep_matching():
             """,
             "...")
 
-    all_insns = set("insn%d" % i for i in range(1,6))
+    all_insns = set("insn%d" % i for i in range(1, 6))
 
     assert knl.id_to_insn["insn1"].depends_on == set()
     assert knl.id_to_insn["insn2"].depends_on == all_insns - set(["insn2"])