diff --git a/lib/ansible/module_utils/azure_rm_common.py b/lib/ansible/module_utils/azure_rm_common.py
index 56a8ee4ebc..d27f4af5d5 100644
--- a/lib/ansible/module_utils/azure_rm_common.py
+++ b/lib/ansible/module_utils/azure_rm_common.py
@@ -528,7 +528,7 @@ class AzureRMModuleBase(object):
             self.log("dependencies: ")
             self.log(str(dependencies))
         serializer = Serializer(classes=dependencies)
-        return serializer.body(obj, class_name)
+        return serializer.body(obj, class_name, keep_readonly=True)
 
     def get_poller_result(self, poller, wait=5):
         '''