diff --git a/ESPFirewall/lib/Firewall/src/API.cpp b/ESPFirewall/lib/Firewall/src/API.cpp
index 9209823..f049967 100644
--- a/ESPFirewall/lib/Firewall/src/API.cpp
+++ b/ESPFirewall/lib/Firewall/src/API.cpp
@@ -205,7 +205,7 @@ namespace fw
         return json_string;
     }
 
-    String API::json_new_attribute(String key, uint8_t value, bool last)
+    String API::json_new_attribute(String key, uint32_t value, bool last)
     {
         return json_new_attribute(key, String(value), last);
     }
@@ -232,8 +232,8 @@ namespace fw
         serialized_string += json_new_attribute("key", rule_ptr->key);
         serialized_string += json_new_attribute("source", rule_ptr->source);
         serialized_string += json_new_attribute("destination", rule_ptr->destination);
-        serialized_string += json_new_attribute("port_from", rule_ptr->destination);
-        serialized_string += json_new_attribute("port_to", rule_ptr->destination);
+        serialized_string += json_new_attribute("port_from", rule_ptr->port_from);
+        serialized_string += json_new_attribute("port_to", rule_ptr->port_to);
         serialized_string += json_new_attribute("protocol", protocol_to_string(rule_ptr->protocol));
         serialized_string += json_new_attribute("target", target_to_string(rule_ptr->target), true);
         serialized_string += "}";
diff --git a/ESPFirewall/lib/Firewall/src/API.hpp b/ESPFirewall/lib/Firewall/src/API.hpp
index e60404e..f7377ff 100644
--- a/ESPFirewall/lib/Firewall/src/API.hpp
+++ b/ESPFirewall/lib/Firewall/src/API.hpp
@@ -40,7 +40,7 @@ namespace fw
 
         bool request_has_firewall_parameter();
         String json_new_attribute(String key, String value, bool last = false);
-        String json_new_attribute(String key, uint8_t value, bool last = false);
+        String json_new_attribute(String key, uint32_t value, bool last = false);
         void json_generic_response(String serialized_string, const uint16_t response_code);
         void json_message_response(String message, const uint16_t response_code);
         String construct_json_firewall_rule(firewall_rule_t *);