diff --git a/lib/ansible/plugins/action/__init__.py b/lib/ansible/plugins/action/__init__.py
index e1dbad17013..72f7a3fc9a9 100644
--- a/lib/ansible/plugins/action/__init__.py
+++ b/lib/ansible/plugins/action/__init__.py
@@ -275,7 +275,7 @@ class ActionBase:
                 return data2.split()[0]
         except IndexError:
             self._display.warning("Calculating checksum failed unusually, please report this to " + \
-                "the list so it can be fixed\ncommand: %s\n----\noutput: %s\n----\n") % (cmd, data)
+                "the list so it can be fixed\ncommand: %s\n----\noutput: %s\n----\n" % (cmd, data))
             # this will signal that it changed and allow things to keep going
             return "INVALIDCHECKSUM"