diff --git a/lib/std/c.zig b/lib/std/c.zig
index fe8989e4b0fc7bc17d78c7fbe3d6e400fc3c847a..eb45d028025d4650f0f74ec42797dc8d0b907e6d 100644
--- a/lib/std/c.zig
+++ b/lib/std/c.zig
@@ -222,11 +222,12 @@ pub const ARCH = switch (native_os) {
 // that actually work.
 pub const TIMERFD_CLOCK = timerfd_clockid_t;
 pub const timerfd_clockid_t = switch (native_os) {
-    .linux, .freebsd => enum(u32) {
+    .freebsd => enum(u32) {
         REALTIME = 0,
         MONOTONIC = 1,
         _,
     },
+    .linux => linux.timerfd_clockid_t,
     else => clockid_t,
 };