diff --git a/lib/models/logs.dart b/lib/models/logs.dart
index 9c21bca..0dd5f6e 100644
--- a/lib/models/logs.dart
+++ b/lib/models/logs.dart
@@ -80,7 +80,7 @@ class Log {
     elapsedMs: json["elapsedMs"],
     question: Question.fromJson(json["question"]),
     reason: json["reason"],
-    rules: List<Rule>.from(json["rules"].map((x) => Rule.fromJson(x))),
+    rules: json["rules"] != null ? List<Rule>.from(json["rules"].map((x) => Rule.fromJson(x))) : [],
     status: json["status"],
     time: DateTime.parse(json["time"]),
     upstream: json["upstream"],
diff --git a/lib/models/server_info.dart b/lib/models/server_info.dart
index 84f9a57..8d26857 100644
--- a/lib/models/server_info.dart
+++ b/lib/models/server_info.dart
@@ -43,7 +43,7 @@ class ServerInfoData {
     dnsPort: json["dns_port"],
     httpPort: json["http_port"],
     protectionEnabled: json["protection_enabled"],
-    dhcpAvailable: json["dhcp_available"],
+    dhcpAvailable: json["dhcp_available"] ?? false,
     running: json["running"],
     version: json["version"],
     language: json["language"],