diff --git a/src/gallium/auxiliary/util/u_blitter.c b/src/gallium/auxiliary/util/u_blitter.c
index 091b6e1b28c..e788b659457 100644
--- a/src/gallium/auxiliary/util/u_blitter.c
+++ b/src/gallium/auxiliary/util/u_blitter.c
@@ -1891,6 +1891,12 @@ static boolean is_box_inside_resource(const struct pipe_resource *res,
       height = u_minify(res->height0, level);
       depth = res->array_size;
       break;
+   case PIPE_TEXTURE_CUBE_ARRAY:
+      width = u_minify(res->width0, level);
+      height = u_minify(res->height0, level);
+      depth = res->array_size;
+      assert(res->array_size % 6 == 0);
+      break;
    case PIPE_MAX_TEXTURE_TYPES:;
    }