diff --git a/src/python/oftest/testutils.py b/src/python/oftest/testutils.py
index 34c9f5f..c865b32 100644
--- a/src/python/oftest/testutils.py
+++ b/src/python/oftest/testutils.py
@@ -143,7 +143,7 @@
                         ipv6_fl=0,
                         tcp_sport=1234,
                         tcp_dport=80,
-			tcp_flags="S"):
+                        tcp_flags="S"):
     """
     Return a simple IPv6/TCP packet