diff --git a/lib/std/c.zig b/lib/std/c.zig
index 3a3cc1f3f23426bffedb4aa25e22c2cb18441e88..570d798e4ddf38232bf4b65bc01d13d7e6e896d7 100644
--- a/lib/std/c.zig
+++ b/lib/std/c.zig
@@ -319,7 +319,7 @@ pub const clockid_t = switch (native_os) {
         THREAD_CPUTIME_ID = 0x20000000,
         PROCESS_CPUTIME_ID = 0x40000000,
     },
-    .dragonfly => enum(u32) {
+    .dragonfly => enum(c_ulong) {
         REALTIME = 0,
         VIRTUAL = 1,
         PROF = 2,