diff --git a/src/stat/fstat.c b/src/stat/fstat.c
index d2a828f3..07f9a5de 100644
--- a/src/stat/fstat.c
+++ b/src/stat/fstat.c
@@ -6,6 +6,7 @@
 
 int fstat(int fd, struct stat *st)
 {
+	if (fd<0) return __syscall_ret(-EBADF);
 	return fstatat(fd, "", st, AT_EMPTY_PATH);
 }