diff --git a/build_engine.py b/build_engine.py
index fe2a8d8..f9ce340 100644
--- a/build_engine.py
+++ b/build_engine.py
@@ -263,8 +263,8 @@ def build_engine(
                 if tactic_value > 0:
                     config.set_tactic_sources(tactic_value)
                 
-                if best:
-                    config.set_flag(trt.BuilderFlag.BENCHMARK)
+                # BENCHMARK flag 在 TRT 8.5+ 已废弃，tactic profiling 逻辑内部自动完成
+                # config.set_flag(trt.BuilderFlag.BENCHMARK)
                 
                 config.set_memory_pool_limit(trt.MemoryPoolType.WORKSPACE, workspace_mb * 1024 * 1024)