diff --git a/src/operators/kernel/central-arm-func/conv_arm_func.h b/src/operators/kernel/central-arm-func/conv_arm_func.h
index f80a8f944139566483c47daf10f9decac49650dc..62296fa63176d1c63ae81c3e6eaf8464f689d56f 100644
--- a/src/operators/kernel/central-arm-func/conv_arm_func.h
+++ b/src/operators/kernel/central-arm-func/conv_arm_func.h
@@ -120,10 +120,15 @@ inline void ConvCompute_int8(const ConvParam<CPU> &param) {
   typedef void (*ConvFunc)(const Tensor &input, const Tensor &kernel,
                            Tensor *output);
   static ConvFunc conv_funcs_table[7][5] = {
-      {0, 0, 0, 0, 0},                                // k = 1
-      {0, 0, 0, 0, 0}, {conv3x3s1_int8, 0, 0, 0, 0},  // k = 3
-      {0, 0, 0, 0, 0}, {conv5x5s1_int8, 0, 0, 0, 0},  // k = 5
-      {0, 0, 0, 0, 0}, {0, 0, 0, 0, 0},               // k = 7
+      {0, 0, 0, 0, 0},  // k = 1
+      //      {0, 0, 0, 0, 0}, {conv3x3s1_int8, 0, 0, 0, 0},  // k = 3
+      //      {0, 0, 0, 0, 0}, {conv5x5s1_int8, 0, 0, 0, 0},  // k = 5
+      {0, 0, 0, 0, 0},
+      {0, 0, 0, 0, 0},  // k = 3
+      {0, 0, 0, 0, 0},
+      {0, 0, 0, 0, 0},  // k = 5
+      {0, 0, 0, 0, 0},
+      {0, 0, 0, 0, 0},  // k = 7
   };
   const Tensor *input = param.Input();
   Tensor *filter = param.Filter();
diff --git a/src/operators/math/conv_arm_int8.h b/src/operators/math/conv_arm_int8.h
index 98843e6158bb0f9816bf49a1cbced5a2ea731446..4e59307158f9f939cd5c0af728e564f7ff3dda06 100644
--- a/src/operators/math/conv_arm_int8.h
+++ b/src/operators/math/conv_arm_int8.h
@@ -24,10 +24,6 @@ namespace operators {
 void conv3x3s1_int8(const framework::Tensor& input,
                     const framework::Tensor& weight, framework::Tensor* output);
 
-void conv3x3s1_int8_4c(const framework::Tensor& input,
-                       const framework::Tensor& weight,
-                       framework::Tensor* output);
-
 void conv5x5s1_int8(const framework::Tensor& input,
                     const framework::Tensor& weight, framework::Tensor* output);