diff --git a/libavcodec/cbs_h266_syntax_template.c b/libavcodec/cbs_h266_syntax_template.c
index 0ff7459f5c..f2003d8bac 100644
--- a/libavcodec/cbs_h266_syntax_template.c
+++ b/libavcodec/cbs_h266_syntax_template.c
@@ -3506,7 +3506,7 @@ static int FUNC(slice_header) (CodedBitstreamContext *ctx, RWContext *rw,
                  tile_idx <=
                  current->sh_slice_address +
                  current->sh_num_tiles_in_slice_minus1; tile_idx++) {
-                tile_y = tile_idx / pps->num_tile_rows;
+                tile_y = tile_idx / pps->num_tile_columns;
                 height = pps->row_height_val[tile_y];
                 current->num_entry_points += (entropy_sync ? height : 1);
             }