diff --git a/tempest/common/rest_client.py b/tempest/common/rest_client.py
index ea09cc0..a795e02 100644
--- a/tempest/common/rest_client.py
+++ b/tempest/common/rest_client.py
@@ -115,7 +115,12 @@
 
         if resp.status == 413:
             body = json.loads(body)
-            raise exceptions.OverLimit(body['overLimit']['message'])
+            if 'overLimit' in body:
+                raise exceptions.OverLimit(body['overLimit']['message'])
+            else:
+                raise exceptions.RateLimitExceeded(
+                    message=body['overLimitFault']['message'],
+                    details=body['overLimitFault']['details'])
 
         if resp.status in (500, 501):
             body = json.loads(body)
diff --git a/tempest/exceptions.py b/tempest/exceptions.py
index f1becda..a3fabe3 100644
--- a/tempest/exceptions.py
+++ b/tempest/exceptions.py
@@ -52,6 +52,11 @@
     message = "Endpoint not found"
 
 
+class RateLimitExceeded(TempestException):
+    message = ("Rate limit exceeded.\nMessage: %(message)s\n"
+               "Details: %(details)s")
+
+
 class OverLimit(TempestException):
     message = "Quota exceeded"