diff --git a/contrib/endpoints/src/api_manager/service_control/proto.cc b/contrib/endpoints/src/api_manager/service_control/proto.cc
index 6ee5827ad4c..7350df646d8 100644
--- a/contrib/endpoints/src/api_manager/service_control/proto.cc
+++ b/contrib/endpoints/src/api_manager/service_control/proto.cc
@@ -1074,7 +1074,7 @@ Status Proto::ConvertAllocateQuotaResponse(
     case ::google::api::servicecontrol::v1::QuotaError::RESOURCE_EXHAUSTED:
       // Quota allocation failed.
       // Same as [google.rpc.Code.RESOURCE_EXHAUSTED][].
-      return Status(Code::PERMISSION_DENIED, "Quota allocation failed.");
+      return Status(Code::RESOURCE_EXHAUSTED, "Quota allocation failed.");
 
     case ::google::api::servicecontrol::v1::QuotaError::PROJECT_SUSPENDED:
       // Consumer project has been suspended.