diff --git a/iptables.py b/iptables.py
index d716600..998afe5 100644
--- a/iptables.py
+++ b/iptables.py
@@ -112,7 +112,7 @@
             if out:
                 for line in out.decode("ascii").split("\n"):
                     m = re.match(
-                        r"^(\d+)\s+([-0-9a-zA-Z]+)\s+(all|tcp|udp)\s+(\S+)\s+([0-9a-f.:/]+)\s+([0-9a-f.:/]+)\s*(.*?)$", line
+                        r"^(\d+)\s+([-0-9a-zA-Z]+)\s+(all|tcp|udp|\d)\s+(\S+)\s+([0-9a-f.:/]+)\s+([0-9a-f.:/]+)\s*(.*?)$", line
                     )
                     if m:
                         line_number = m.group(1)