diff --git a/common.py b/common.py
index a8547dde..83836500 100644
--- a/common.py
+++ b/common.py
@@ -826,7 +826,7 @@ def prepare_source(vcs, app, build, build_dir, extlib_dir, sdk_path, ndk_path, j
     # There should never be gen or bin directories in the source, so just get
     # rid of them...
     for baddir in ['gen', 'bin']:
-        badpath = os.path.join(root_dir, 'gen')
+        badpath = os.path.join(root_dir, baddir)
         if os.path.exists(badpath):
             shutil.rmtree(badpath)