diff --git a/lib/game.dart b/lib/game.dart
index f88a61d..0fdc67a 100644
--- a/lib/game.dart
+++ b/lib/game.dart
@@ -152,7 +152,7 @@ class ModManagerState extends State<ModManager> {
           itemBuilder: (ctx, idx) {
             Mod mod = settings.mods[idx];
             return Padding(
-              key: Key("${mod.mod_instance_id}"),
+              key: Key("${mod.mod_instance_id()}"),
               padding: EdgeInsets.all(12),
               child: ListTile(
                 title: Text(mod.mod_name),
@@ -222,7 +222,7 @@ class ModPage extends StatelessWidget {
         id.text = args.mod_id.toString();
         name.text = args.mod_name;
         isNewMod = args.newMod;
-        instance = args.mod_instance_id;
+        instance = args.mod_instance_id();
       }
     }
 
diff --git a/lib/mod.dart b/lib/mod.dart
index bde6acc..05d6f2f 100644
--- a/lib/mod.dart
+++ b/lib/mod.dart
@@ -12,7 +12,14 @@ class Mod {
   int mod_id;
 
   bool newMod = false;
-  final mod_instance_id = UuidV4().generate();
+  String _id = "";
+  String mod_instance_id() {
+    if (_id.isEmpty) {
+      _id = UuidV4().generate();
+    }
+
+    return _id;
+  }
 
   Mod({this.mod_name = "undef", this.mod_id = 0, this.newMod = false});
 }