diff --git a/lib/models/code.dart b/lib/models/code.dart
index 89e10d94730ccc5271b308825a020ffc9581a686..36a564d8054040f1713f534f0cf69e3d5093d8bf 100644
--- a/lib/models/code.dart
+++ b/lib/models/code.dart
@@ -115,7 +115,12 @@ class Code {
   }
 
   static Type _getType(Uri uri) {
-    return uri.host == "totp" ? Type.totp : Type.hotp;
+    if (uri.host == "totp") {
+      return Type.totp;
+    } else if (uri.host == "hotp") {
+      return Type.hotp;
+    }
+    throw UnsupportedError("Unsupported format with host ${uri.host}");
   }
 
   @override