diff --git a/lib/ansible/modules/extras/messaging/rabbitmq_exchange.py b/lib/ansible/modules/extras/messaging/rabbitmq_exchange.py
index 96b32ab38d9..7c0c338a215 100644
--- a/lib/ansible/modules/extras/messaging/rabbitmq_exchange.py
+++ b/lib/ansible/modules/extras/messaging/rabbitmq_exchange.py
@@ -74,7 +74,8 @@ options:
     arguments:
         description:
             - extra arguments for exchange. If defined this argument is a key/value dictionary
-        required: false        
+        required: false
+        default: {}
 '''
 
 EXAMPLES = '''