diff --git a/hw/9pfs/9p-local.c b/hw/9pfs/9p-local.c
index 4708e170a4..ee592b62f8 100644
--- a/hw/9pfs/9p-local.c
+++ b/hw/9pfs/9p-local.c
@@ -775,8 +775,11 @@ static int local_fid_fd(int fid_type, V9fsFidOpenState *fs)
 {
     if (fid_type == P9_FID_DIR) {
         return dirfd(fs->dir.stream);
-    } else {
+    } else if (fid_type == P9_FID_FILE) {
         return fs->fd;
+    } else {
+        errno = EBADF;
+        return -1;
     }
 }