diff --git a/lib/ansible/plugins/shell/powershell.py b/lib/ansible/plugins/shell/powershell.py
index de82fbfe1be..ead0c02fa6f 100644
--- a/lib/ansible/plugins/shell/powershell.py
+++ b/lib/ansible/plugins/shell/powershell.py
@@ -103,7 +103,7 @@ class ShellModule(object):
         ''' % dict(path=path)
         return self._encode_script(script)
 
-    def build_module_command(self, env_string, shebang, cmd, args_path=None, rm_tmp=None):
+    def build_module_command(self, env_string, shebang, cmd, arg_path=None, rm_tmp=None):
         cmd_parts = shlex.split(to_bytes(cmd), posix=False)
         cmd_parts = map(to_unicode, cmd_parts)
         if shebang and shebang.lower() == '#!powershell':