diff --git a/acctonUseDpctl/allow_all_ucast_route.py b/acctonUseDpctl/allow_all_ucast_route.py
index f5a69f3..14a6c56 100755
--- a/acctonUseDpctl/allow_all_ucast_route.py
+++ b/acctonUseDpctl/allow_all_ucast_route.py
@@ -42,7 +42,7 @@
                                       eth_src="00:00:00:11:22:33",
                                       ip_src=toIpV4Str(0xc0a80164),
                                       ip_dst=toIpV4Str(0xc0a80202))
-        
+
         output_pkt = simple_tcp_packet(eth_dst="00:00:04:22:44:66",
                                        eth_src="00:00:04:22:33:55",
                                        ip_src=toIpV4Str(0xc0a80164),