diff --git a/lib/ansible/modules/system/timezone.py b/lib/ansible/modules/system/timezone.py
index 4b0bd433cbc..fe3d48c7859 100644
--- a/lib/ansible/modules/system/timezone.py
+++ b/lib/ansible/modules/system/timezone.py
@@ -55,13 +55,7 @@ diff:
   description: The differences about the given arguments.
   returned: success
   type: complex
-  contains:
-    before:
-      description: The values before change
-      type: dict
-    after:
-      description: The values after change
-      type: dict
+  sample: '{"before": {"name": "UTC"},<br>"after": {"name": "Asia/Tokyo"}}'
 '''
 
 EXAMPLES = '''