diff --git a/src/layer/x86/pooling_x86.cpp b/src/layer/x86/pooling_x86.cpp
index ac0702943..f4b8d836a 100644
--- a/src/layer/x86/pooling_x86.cpp
+++ b/src/layer/x86/pooling_x86.cpp
@@ -39,7 +39,7 @@ Pooling_x86::Pooling_x86()
 #endif // __SSE2__
 }
 
-int Pooling_x86::create_pipeline(const Option& _opt)
+int Pooling_x86::create_pipeline(const Option& /*opt*/)
 {
     if (adaptive_pooling)
     {