diff --git a/libc/upstream-freebsd/freebsd-compat.h b/libc/upstream-freebsd/freebsd-compat.h
index 5298663..8030eea 100644
--- a/libc/upstream-freebsd/freebsd-compat.h
+++ b/libc/upstream-freebsd/freebsd-compat.h
@@ -18,6 +18,7 @@
 #define _BIONIC_FREEBSD_COMPAT_H_included
 
 #define __USE_BSD
+#define REPLACE_GETOPT
 
 #define _close close
 #define _fcntl fcntl