diff --git a/mobile/src/operators/kernel/cl/cl-kernel-func/conv_func.cpp b/mobile/src/operators/kernel/cl/cl-kernel-func/conv_func.cpp
index 3489f44d91ed6c4ecb0af9837f4dfd4a4d8c0d6a..a61952f12f95ea304f9fc98d67bc330a1fb3f631 100644
--- a/mobile/src/operators/kernel/cl/cl-kernel-func/conv_func.cpp
+++ b/mobile/src/operators/kernel/cl/cl-kernel-func/conv_func.cpp
@@ -399,20 +399,24 @@ void ConvAddBnRelu(framework::CLHelper *cl_helper,
     status = clSetKernelArg(kernel, index++, sizeof(int), &output_height);
     CL_CHECK_ERRORS(status);
 
-    status = clSetKernelArg(kernel, index++, sizeof(int), &output_c);
-    CL_CHECK_ERRORS(status);
-
     if (param.Filter()->dims()[2] == 3 && param.Filter()->dims()[3] == 3) {
-      if (filter_channel != input_channel) {
+      // normal conv
+      if (param.Filter()->dims()[0] == param.Output()->dims()[1] &&
+          param.Filter()->dims()[1] == param.Input()->dims()[1]) {
+        status = clSetKernelArg(kernel, index++, sizeof(int), &output_c);
+        CL_CHECK_ERRORS(status);
         status = clSetKernelArg(kernel, index++, sizeof(int), &filter_channel);
         CL_CHECK_ERRORS(status);
-        int group = input_channel / filter_channel;
+        int group = 1;
         status = clSetKernelArg(kernel, index++, sizeof(int), &group);
         CL_CHECK_ERRORS(status);
-      } else {
+      } else if (!(param.Filter()->dims()[0] == param.Input()->dims()[1] &&
+                   param.Filter()->dims()[1] == 1)) {  // not depwise
+        status = clSetKernelArg(kernel, index++, sizeof(int), &output_c);
+        CL_CHECK_ERRORS(status);
         status = clSetKernelArg(kernel, index++, sizeof(int), &filter_channel);
         CL_CHECK_ERRORS(status);
-        int group = 1;
+        int group = input_channel / filter_channel;
         status = clSetKernelArg(kernel, index++, sizeof(int), &group);
         CL_CHECK_ERRORS(status);
       }