diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
index 309c3d1f0a6..622f759812a 100644
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -175,8 +175,8 @@ llvmpipe_init_compute_caps(struct pipe_screen *screen)
 
    caps->max_local_size = 32768;
    caps->grid_dimension = 3;
-   caps->max_global_size = 1 << 31;
-   caps->max_mem_alloc_size = 1 << 31;
+   caps->max_global_size = 1ull << 31;
+   caps->max_mem_alloc_size = 1ull << 31;
    caps->subgroup_sizes = lp_native_vector_width / 32;
    caps->max_subgroups = 1024 / (lp_native_vector_width / 32);
    caps->max_compute_units = 8;