diff --git a/lib/posix/_chdir.c b/lib/posix/_chdir.c
index 34c177a6b..9bcbeed70 100755
--- a/lib/posix/_chdir.c
+++ b/lib/posix/_chdir.c
@@ -11,6 +11,7 @@ _CONST char *name;
   return(_syscall(FS, CHDIR, &m));
 }
 
+#if 0
 PUBLIC int fchdir(fd)
 int fd;
 {
@@ -19,4 +20,5 @@ int fd;
   m.m1_i1 = fd;
   return(_syscall(FS, FCHDIR, &m));
 }
+#endif