diff --git a/tools/bin/package_application.py b/tools/bin/package_application.py
index 5d8624e0..200c507f 100755
--- a/tools/bin/package_application.py
+++ b/tools/bin/package_application.py
@@ -19,7 +19,7 @@
 SIGNATURE_FILE = 'SIGNATURE.DS'
 MANIFEST_FILE = 'MANIFEST.json'
 
-BYTE_CODE_FILES = re.compile('^.*\.(pyc|pyo|pyd)$')
+BYTE_CODE_FILES =  re.compile(r'^.*/.(pyc|pyo|pyd)$')
 BYTE_CODE_FOLDERS = re.compile('^(__pycache__)$')