diff --git a/docs/install.sh b/docs/install.sh
index 02a48eb5..16a291ce 100755
--- a/docs/install.sh
+++ b/docs/install.sh
@@ -50,7 +50,7 @@ fi
 
 # Create a key for encrypted swap, if needed
 sudo mkdir -p /mnt-root/etc/
-sudo chmod +r -R /mnt-root
+sudo chmod 777 -R /mnt-root
 echo "$(head -c32 /dev/random | base64)" > /mnt-root/etc/swap.key
 
 echo "WARNING! The disks in $TARGET_HOST are about to get wiped"