diff --git a/Tools/PyUtils/python/scripts/filter_files.py b/Tools/PyUtils/python/scripts/filter_files.py
index a295b87f0f492e12325fa394c5316a5274c590b6..f2409d15fa5229edc32ce5945de8310d2f2b6e6f 100644
--- a/Tools/PyUtils/python/scripts/filter_files.py
+++ b/Tools/PyUtils/python/scripts/filter_files.py
@@ -111,7 +111,7 @@ def main(args):
         # optimization: run directly 'AtlCopyBSEvent.exe
         import subprocess
         cmd = ' '.join([
-            'AtlCopyBSEvent.exe',
+            'AtlCopyBSEvent',
             '-e %(evt-list)s',
             '%(run-list)s',
             '--out %(output)s',