diff --git a/src/gallium/auxiliary/nir/tgsi_to_nir.c b/src/gallium/auxiliary/nir/tgsi_to_nir.c
index c55e8b84a41..7b0d63d00f9 100644
--- a/src/gallium/auxiliary/nir/tgsi_to_nir.c
+++ b/src/gallium/auxiliary/nir/tgsi_to_nir.c
@@ -585,7 +585,7 @@ ttn_src_for_file_and_index(struct ttn_compile *c, unsigned file, unsigned index,
 
       src = nir_src_for_ssa(load);
       b->shader->info.system_values_read |=
-         (1 << nir_system_value_from_intrinsic(op));
+         (1ull << nir_system_value_from_intrinsic(op));
 
       break;
    }