diff --git a/patches/initrd/unionstackmount1310.patch b/patches/initrd/unionstackmount1310.patch
index 4be09867aad8168f908569c2891f6d1925b36567..593d5610a430c2857311cbf736782769ba25238d 100644
--- a/patches/initrd/unionstackmount1310.patch
+++ b/patches/initrd/unionstackmount1310.patch
@@ -54,7 +54,7 @@
 +            mkdir -p "${overlay_mount_dir}"
 +            mount -t ${UNIONFS} -o "lowerdir=${mounts}" root "${overlay_mount_dir}"
 +            # Stacking multiple overlays leads to "No such device" errors upon access
-+            mount -t ${UNIONFS} -o "lowerdir=${mounts}",upperdir=/cow/upper,workdir=/cow/work" cowroot "${rootmnt}"
++            mount -t ${UNIONFS} -o "lowerdir=${mounts},upperdir=/cow/upper,workdir=/cow/work" cowroot "${rootmnt}"
 +            lower="${overlay_mount_dir}"
              ;;
      esac