diff --git a/src/gallium/auxiliary/util/u_compute.c b/src/gallium/auxiliary/util/u_compute.c
index df00df52585..518f628d55d 100644
--- a/src/gallium/auxiliary/util/u_compute.c
+++ b/src/gallium/auxiliary/util/u_compute.c
@@ -106,8 +106,10 @@ void util_compute_blit(struct pipe_context *ctx, struct pipe_blit_info *blit_inf
                       blit_info->dst.box.y,
                       blit_info->dst.box.z,
                       0,
-                      u_bitcast_f2u((blit_info->src.box.width - 0.5) / (float)src->width0),
-                      u_bitcast_f2u((blit_info->src.box.height - 0.5) / (float)src->height0),
+                      u_bitcast_f2u((blit_info->src.box.x + blit_info->src.box.width - 0.5) /
+                                    (float)src->width0),
+                      u_bitcast_f2u((blit_info->src.box.y + blit_info->src.box.height - 0.5) /
+                                    (float)src->height0),
                       0,
                       0};