diff --git a/src/fpga/bias_scale.cpp b/src/fpga/bias_scale.cpp
index 23889d5b1fee3d8cb9e4673f42b18574366411eb..50f1ed03f0121b5afdc41d427e5b52675994bd1e 100644
--- a/src/fpga/bias_scale.cpp
+++ b/src/fpga/bias_scale.cpp
@@ -27,9 +27,6 @@ void align_element(float **data_in, int num_per_div_before_alignment, int num) {
       (num + num_per_div_before_alignment - 1) / num_per_div_before_alignment;
   int num_per_div_after_alignment =
       align_to_x(num_per_div_before_alignment, BS_NUM_ALIGNMENT);
-  if (num_per_div_before_alignment == num_per_div_after_alignment) {
-    return;
-  }
   int num_element =
       2 * div_num * num_per_div_after_alignment;  // including bias & scale
   float *ptr_aligned =