diff --git a/alpine/mkinitrd.sh b/alpine/mkinitrd.sh
index 208469a39..0073fd09c 100755
--- a/alpine/mkinitrd.sh
+++ b/alpine/mkinitrd.sh
@@ -9,7 +9,7 @@ do
   cp -a $f /tmp
 done
 
-mkdir -m 555 /tmp/dev /tmp/proc /tmp/sys
+mkdir -m 555 /tmp/dev /tmp/proc /tmp/sys /tmp/mnt
 mkdir -m 1777 /tmp/tmp
 
 cd /tmp/dev