diff --git a/nova/api/ec2/__init__.py b/nova/api/ec2/__init__.py
index a59361981927..f48207ed572f 100644
--- a/nova/api/ec2/__init__.py
+++ b/nova/api/ec2/__init__.py
@@ -573,10 +573,8 @@ class Executor(wsgi.Application):
                 exception.NoMoreFixedIps,
                 exception.NotAuthorized,
                 exception.QuotaError,
-                exception.QuotaError,
                 exception.SecurityGroupExists,
                 exception.SecurityGroupLimitExceeded,
-                exception.SecurityGroupLimitExceeded,
                 exception.SecurityGroupRuleExists,
                 exception.VolumeUnattached,
                 # Following aren't translated to valid EC2 errors.