diff --git a/src/ggml-cuda/fattn-vec-f16.cuh b/src/ggml-cuda/fattn-vec-f16.cuh
index 5ec3b91ae..34a2992c7 100644
--- a/src/ggml-cuda/fattn-vec-f16.cuh
+++ b/src/ggml-cuda/fattn-vec-f16.cuh
@@ -220,7 +220,6 @@ static __global__ void flash_attn_vec_ext_f16(
         for (int j = 0; j < ncols; ++j) {
             half kqmax_new_j = ncols == 1 ? kqmax_new : kqmax_new_arr[j];
 
-            kqmax_new_j = warp_reduce_max(kqmax_new_j);
             if (threadIdx.x == 0) {
                 kqmax_shared[j][threadIdx.y] = kqmax_new_j;
             }
diff --git a/src/ggml-cuda/fattn-vec-f32.cuh b/src/ggml-cuda/fattn-vec-f32.cuh
index 3d93f4a8a..a28fc8b7f 100644
--- a/src/ggml-cuda/fattn-vec-f32.cuh
+++ b/src/ggml-cuda/fattn-vec-f32.cuh
@@ -206,7 +206,6 @@ static __global__ void flash_attn_vec_ext_f32(
         for (int j = 0; j < ncols; ++j) {
             float kqmax_new_j = kqmax_new_arr[j];
 
-            kqmax_new_j = warp_reduce_max(kqmax_new_j);
             if (threadIdx.x == 0) {
                 kqmax_shared[j][threadIdx.y] = kqmax_new_j;
             }