diff --git a/src/firewall/core/nftables.py b/src/firewall/core/nftables.py
index 76668a6..daa7ace 100644
--- a/src/firewall/core/nftables.py
+++ b/src/firewall/core/nftables.py
@@ -82,7 +82,7 @@ def _icmp_types_fragments(protocol, type, code=None):
     fragments = [{"match": {"left": {"payload": {"protocol": protocol, "field": "type"}},
                             "op": "==",
                             "right": type}}]
-    if code:
+    if code is not None:
         fragments.append({"match": {"left": {"payload": {"protocol": protocol, "field": "code"}},
                                     "op": "==",
                                     "right": code}})