diff --git a/android_class_shadowing_scanner/__init__.py b/android_class_shadowing_scanner/__init__.py
index 1a6541f..54d108a 100644
--- a/android_class_shadowing_scanner/__init__.py
+++ b/android_class_shadowing_scanner/__init__.py
@@ -400,6 +400,8 @@ def check_smali():
     #        )
     #    )
     sha256 = args.sha256
+    if args.output_dir and (args.output_dir / sha256).exists():
+        return
     data = {}
     with tempfile.TemporaryDirectory() as tmpdirname:
         d = Path(tmpdirname)