diff --git a/repos/system_upgrade/common/actors/scancustommodifications/libraries/scancustommodifications.py b/repos/system_upgrade/common/actors/scancustommodifications/libraries/scancustommodifications.py
index 62c6012019..a34eb5d3c0 100644
--- a/repos/system_upgrade/common/actors/scancustommodifications/libraries/scancustommodifications.py
+++ b/repos/system_upgrade/common/actors/scancustommodifications/libraries/scancustommodifications.py
@@ -42,7 +42,7 @@ def deduce_actor_name(a_file):
     # NOTE(ivasilev) Actors reside only in actor.py files, so AST processing any other file can be skipped.
     # In case this function has been called on a non-actor file, let's go straight to recursive call on the assumed
     # location of the actor file.
-    if a_file.endswith('actor.py'):
+    if os.path.basename(a_file) == 'actor.py':
         data = None
         with open(a_file) as f:
             try: