diff --git a/lib/libc/stdlib/getsubopt.c b/lib/libc/stdlib/getsubopt.c
index 8577446d1cd..6d76f78dd1c 100644
--- a/lib/libc/stdlib/getsubopt.c
+++ b/lib/libc/stdlib/getsubopt.c
@@ -39,7 +39,6 @@ __FBSDID("$FreeBSD$");
 
 #include <stdlib.h>
 #include <string.h>
-#include <unistd.h>
 
 /*
  * The SVID interface to getsubopt provides no way of figuring out which