diff --git a/lib/std/c.zig b/lib/std/c.zig
index 0e9073f4d1c1ea3a08559e76c704b11cc9d92039..bcfbccccd44f9ed131c91ad36e1cf7e5d60de4a2 100644
--- a/lib/std/c.zig
+++ b/lib/std/c.zig
@@ -10845,7 +10845,7 @@ pub const malloc_size = switch (native_os) {
     else => {},
 };
 pub const malloc_usable_size = switch (native_os) {
-    .freebsd, .linux, .serenity => private.malloc_usable_size,
+    .freebsd, .linux => private.malloc_usable_size,
     else => {},
 };
 pub const posix_memalign = switch (native_os) {