diff --git a/modules.d/95rootfs-block/mount-root.sh b/modules.d/95rootfs-block/mount-root.sh
index 9324623..77a6b37 100755
--- a/modules.d/95rootfs-block/mount-root.sh
+++ b/modules.d/95rootfs-block/mount-root.sh
@@ -1,4 +1,4 @@
 #!/bin/sh
 if [ ! -s /.resume -a "$root" ]; then
-    mount ${fstype:-t auto} -o "$rflags" "$root" "$NEWROOT" && ROOTFS_MOUNTED=yes
+    mount ${fstype:--t auto} -o "$rflags" "$root" "$NEWROOT" && ROOTFS_MOUNTED=yes
 fi