diff --git a/lib/ansible/module_utils/nxos.py b/lib/ansible/module_utils/nxos.py
index 471f3226d7..36b8a3306e 100644
--- a/lib/ansible/module_utils/nxos.py
+++ b/lib/ansible/module_utils/nxos.py
@@ -169,7 +169,7 @@ class Cli:
                 except ValueError:
                     out = to_text(out).strip()
 
-            if item['output'] == 'json' and isinstance(out, string_types):
+            if item['output'] == 'json' and out != 'ok' and isinstance(out, string_types):
                 self._module.fail_json(msg='failed to retrieve output of %s in json format' % item['command'])
 
             responses.append(out)