diff --git a/scripts/install.sh b/scripts/install.sh
index 897667c..a545d83 100755
--- a/scripts/install.sh
+++ b/scripts/install.sh
@@ -68,6 +68,9 @@ disko \
 # copy extra files into mountpoint
 cp -ar "$temp/." "$ROOT_MNT/"
 
+# fix permissions of mountpoint
+chmod 755 "$ROOT_MNT"
+
 # run nixos-install
 nixos-install \
   --no-channel-copy \