diff --git a/lib/api.dart b/lib/api.dart
index ac629848..1bbcbf0f 100644
--- a/lib/api.dart
+++ b/lib/api.dart
@@ -34,7 +34,7 @@ class APIResponse {
   dynamic data = {};
 
   // Request is "valid" if a statusCode was returned
-  bool isValid() => statusCode >= 0;
+  bool isValid() => (statusCode >= 0) && (statusCode < 500);
 }
 
 
diff --git a/lib/widget/dialogs.dart b/lib/widget/dialogs.dart
index 9876b641..8b0a6156 100644
--- a/lib/widget/dialogs.dart
+++ b/lib/widget/dialogs.dart
@@ -128,10 +128,10 @@ Future<void> showServerError(String title, String description) async {
   );
 }
 
-Future<void> showStatusCodeError(int status, {int expected = 200}) async {
+Future<void> showStatusCodeError(int status) async {
 
   String msg = L10().responseInvalid;
-  String extra = "Server responded with status code ${status}";
+  String extra = "${L10().statusCode}: ${status}";
 
   switch (status) {
     case 400: