diff --git a/lib/services/patcher_api.dart b/lib/services/patcher_api.dart
index 241fb458..b5b1130e 100644
--- a/lib/services/patcher_api.dart
+++ b/lib/services/patcher_api.dart
@@ -29,7 +29,7 @@ class PatcherAPI {
 
   Future<void> initPatcher() async {
     Directory appCache = await getTemporaryDirectory();
-    _tmpDir = Directory('$appCache/patcher');
+    _tmpDir = Directory('${appCache.path}/patcher');
     _tmpDir!.createSync();
     _workDir = _tmpDir!.createTempSync('tmp-');
     _inputFile = File('${_workDir!.path}/base.apk');