diff --git a/src/cnn/pool_layer_t.h b/src/cnn/pool_layer_t.h
index d5e66b2..cf36fc2 100644
--- a/src/cnn/pool_layer_t.h
+++ b/src/cnn/pool_layer_t.h
@@ -104,10 +104,7 @@ struct pool_layer_t : layer_t {
         for (int z = 0; z < in.size.z; z++) {
           float sum_error = 0;
           for (int i = rn.min_x; i <= rn.max_x; i++) {
-            int minx = i * stride;
             for (int j = rn.min_y; j <= rn.max_y; j++) {
-              int miny = j * stride;
-
               int is_max = in(x, y, z) == out(i, j, z) ? 1 : 0;
               sum_error += is_max * grad_next_layer(i, j, z);
             }