diff --git a/ggml-cuda.cu b/ggml-cuda.cu
index 3c9863dae..20e3b5efa 100644
--- a/ggml-cuda.cu
+++ b/ggml-cuda.cu
@@ -6045,15 +6045,15 @@ static  __global__ void pool2d_nchw_kernel(
             return;
         const int I_HW = ih * iw;
         const int O_HW = oh * ow;
-        const int nc = idx / (oh * ow);
-        const int cur_oh = idx % (oh * ow) / ow;
-        const int cur_ow = idx % (oh * ow) % ow;
+        const int nc = idx / O_HW;
+        const int cur_oh = idx % O_HW / ow;
+        const int cur_ow = idx % O_HW % ow;
         const Ti* i_ptr = src + nc * I_HW;
         To* o_ptr = dst + nc * O_HW;
         const int start_h = cur_oh * sh - ph;
         const int bh = max(0, start_h);
         const int eh = min(ih, start_h + kh);
-        const int start_w = ow * sw - pw;
+        const int start_w = cur_ow * sw - pw;
         const int bw = max(0, start_w);
         const int ew = min(iw, start_w + kw);
         const To scale = 1. / ((eh - bh) * (ew - bw));