diff --git a/lib/ansible/module_utils/basic.py b/lib/ansible/module_utils/basic.py
index 9246fd1df7b..654042370b5 100644
--- a/lib/ansible/module_utils/basic.py
+++ b/lib/ansible/module_utils/basic.py
@@ -115,6 +115,7 @@ FILE_COMMON_ARGUMENTS=dict(
     backup = dict(),
     force = dict(),
     remote_src = dict(), # used by assemble
+    directory_mode = dict(), # used by copy
 )