diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py
index 599c7ddaa2..9a3e32ac1b 100644
--- a/bitbake/lib/bb/cooker.py
+++ b/bitbake/lib/bb/cooker.py
@@ -1787,7 +1787,7 @@ class CookerCollectFiles(object):
             for ignored in ('SCCS', 'CVS', '.svn'):
                 if ignored in dirs:
                     dirs.remove(ignored)
-            found += [os.path.join(dir, f) for f in files if (f.endswith(['.bb', '.bbappend']))]
+            found += [os.path.join(dir, f) for f in files if (f.endswith(('.bb', '.bbappend')))]
 
         return found