diff --git a/src/framework/tensor.h b/src/framework/tensor.h
index 364f79cc84b5a3f4c2aa1838961eb092a9b842f0..797fcf5bffbe5e738fe352d1ca84602f0e5d86a0 100644
--- a/src/framework/tensor.h
+++ b/src/framework/tensor.h
@@ -257,10 +257,12 @@ class Tensor {
   struct FPGAArgs {
     float scale;
 
-    inline const float *scale_pointer() const { return &scale; }
+    inline float *scale_pointer() { return &scale; }
   };
 
-  const struct FPGAArgs fpga_args() const { return fpgaArgs_; }
+  struct FPGAArgs fpga_args() const {
+    return fpgaArgs_;
+  }
 #endif
 
  private:
diff --git a/src/operators/kernel/fpga/fc_relu_kernel.cpp b/src/operators/kernel/fpga/fc_relu_kernel.cpp
index 704b0d76cb96eb62012bf85cae96b5c1448b3cc0..6b828f102412fb5aa8ef125c4ccb9b96598fc458 100644
--- a/src/operators/kernel/fpga/fc_relu_kernel.cpp
+++ b/src/operators/kernel/fpga/fc_relu_kernel.cpp
@@ -41,7 +41,6 @@ bool FusionFcReluKernel<FPGA, float>::Init(FusionFcReluParam *param) {
 
   fpga::ConvArgs convArgs;
   convArgs.relu_enabled = relu_enabled;
-  convArgs.bias_address = (void *)input_z_ptr;
   convArgs.filter_address = (void *)input_y_ptr;
   convArgs.filter_num = out->dims()[1];
   convArgs.group_num = 1;
diff --git a/src/operators/kernel/fpga/fusion_fc_kernel.cpp b/src/operators/kernel/fpga/fusion_fc_kernel.cpp
index 9443270342a681199cd2cfe068a13d806cb606f9..340561a9aa97ceda0bd37c40d721a0c5e3e535b4 100644
--- a/src/operators/kernel/fpga/fusion_fc_kernel.cpp
+++ b/src/operators/kernel/fpga/fusion_fc_kernel.cpp
@@ -41,7 +41,6 @@ bool FusionFcKernel<FPGA, float>::Init(FusionFcParam *param) {
 
   fpga::ConvArgs convArgs;
   convArgs.relu_enabled = relu_enabled;
-  convArgs.bias_address = (void *)input_z_ptr;
   convArgs.filter_address = (void *)input_y_ptr;
   convArgs.filter_num = out->dims()[1];
   convArgs.group_num = 1;