diff --git a/src/system/game-data.ts b/src/system/game-data.ts
index 13485b17f..d778be04f 100644
--- a/src/system/game-data.ts
+++ b/src/system/game-data.ts
@@ -207,6 +207,8 @@ export class GameData {
           localStorage.setItem('data_bak', localStorage.getItem('data'));
 
           localStorage.setItem('data', btoa(systemData));
+
+          resolve(true);
         }
       });
     });