diff --git a/src/operators/kernel/fpga/softmax_kernel.cpp b/src/operators/kernel/fpga/softmax_kernel.cpp
index 2a554b1430cba591f5b3b32f40de174898500b69..95bcb28f9c30481bd234d83ab44b415d59388475 100644
--- a/src/operators/kernel/fpga/softmax_kernel.cpp
+++ b/src/operators/kernel/fpga/softmax_kernel.cpp
@@ -31,7 +31,7 @@ bool SoftmaxKernel<FPGA, float>::Init(SoftmaxParam *param) {
     fpga::BypassArgs args;
     args.convert_type = fpga::DATA_FP16_TO_FP32;
     args.layout_type = fpga::LAYOUT_HWC_TO_CHW;
-    args.image.address = reinterpret_cast<void *>(input_ptr);
+    args.image.address = (void *)(input_ptr);
     args.image.height = input->dims()[1];
     args.image.width = input->dims()[2];
     args.image.channels = input->dims()[3];