diff --git a/daemon/mount.c b/daemon/mount.c
index d1b26fa7b..f59381211 100644
--- a/daemon/mount.c
+++ b/daemon/mount.c
@@ -48,6 +48,8 @@ do_mount_vfs (const char *options, const char *vfstype,
   char *mp;
   char *error;
 
+  ABS_PATH (mountpoint, return -1);
+
   is_root = strcmp (mountpoint, "/") == 0;
 
   if (!root_mounted && !is_root) {