diff --git a/src/firewall/core/nftables.py b/src/firewall/core/nftables.py
index 69ee63b..97b1cd9 100644
--- a/src/firewall/core/nftables.py
+++ b/src/firewall/core/nftables.py
@@ -1064,7 +1064,7 @@ class nftables(object):
                 if addr_field == "daddr":
                     raise FirewallError(INVALID_RULE, "%s._rule_addr_fragment()", (self.__class__))
                 family = "ether"
-            if check_single_address("ipv4", address):
+            elif check_single_address("ipv4", address):
                 family = "ip"
             elif check_address("ipv4", address):
                 family = "ip"