diff --git a/lib/std/c/darwin.zig b/lib/std/c/darwin.zig
index c3e464f6d2..f1f706fa6c 100644
--- a/lib/std/c/darwin.zig
+++ b/lib/std/c/darwin.zig
@@ -4071,7 +4071,7 @@ pub const HOST = struct {
     pub const EXTMOD_INFO64_COUNT = HostCount(vm_extmod_statistics_data_t);
 };
 
-pub const host_basic_info = extern struct {
+pub const host_basic_info = packed struct(u32) {
     max_cpus: integer_t,
     avail_cpus: integer_t,
     memory_size: natural_t,