diff --git a/paddle/fluid/imperative/tracer.h b/paddle/fluid/imperative/tracer.h
index 7b65d55e9eff1444d84a3fba284ecbb8b47d1733..ae3b16727dbbacf928dacdf97d983b4f6687c8bb 100644
--- a/paddle/fluid/imperative/tracer.h
+++ b/paddle/fluid/imperative/tracer.h
@@ -48,7 +48,7 @@ class Tracer {
   virtual ~Tracer() {}
 
   std::set<std::string> Trace(OpBase* op, const VarBasePtrMap& inputs,
-                              const VarBasePtrMap& outputs,
+                              VarBasePtrMap& outputs,  // NOLINT
                               framework::AttributeMap attrs_map,
                               const platform::Place expected_place,
                               const bool stop_gradient = false);