diff --git a/paddle/fluid/inference/api/api_tensorrt_subgraph_engine.cc b/paddle/fluid/inference/api/api_tensorrt_subgraph_engine.cc
index 48704ba235210c848c66bc4f28a4e780f8a32e84..5967402055c61dd480055497640a16ab7e94a746 100644
--- a/paddle/fluid/inference/api/api_tensorrt_subgraph_engine.cc
+++ b/paddle/fluid/inference/api/api_tensorrt_subgraph_engine.cc
@@ -32,8 +32,8 @@ class TensorRTSubgraphPredictor : public NativePaddlePredictor {
       : NativePaddlePredictor(config), config_(config) {}
 
   bool Init(const std::shared_ptr<framework::Scope>& parent_scope) {
-    FLAGS_inference_analysis_enable_tensorrt_subgraph_engine = true;
     VLOG(3) << "Predictor::init()";
+    FLAGS_inference_analysis_enable_tensorrt_subgraph_engine = true;
     FLAGS_tensorrt_max_batch_size = config_.max_batch_size;
     FLAGS_tensorrt_workspace_size = config_.workspace_size;
     if (config_.use_gpu) {