diff --git a/src/operators/math/pool_2x2.cpp b/src/operators/math/pool_2x2.cpp
index 6cb084f91734facc512507705dcd21f5554d0071..c86003f6f96b632efd50bbb156293510e3d8521c 100644
--- a/src/operators/math/pool_2x2.cpp
+++ b/src/operators/math/pool_2x2.cpp
@@ -173,7 +173,7 @@ void Pool2x2Avg(vector<int> strides, vector<int> paddings, const Tensor *input,
   }
 #else
 
-  // TODO(): to imp other asm
+// TODO(): to imp other asm
 
 #endif