diff --git a/lib/std/c.zig b/lib/std/c.zig
index 91daebcf0915f75b56433da8d433b1255c1d9193..66c267cf5c9cd8dc28a8ffb8d258e4883d4e9e6f 100644
--- a/lib/std/c.zig
+++ b/lib/std/c.zig
@@ -11096,7 +11096,7 @@ pub const pthread_cancelstate = switch (native_os) {
         ENABLE = 1,
         DISABLE = 0,
     },
-    .dragonfly, .haiku => enum(c_int) {
+    .dragonfly, .freebsd, .haiku => enum(c_int) {
         ENABLE = 0,
         DISABLE = 1,
     },