diff --git a/install-and-chroot.sh b/install-and-chroot.sh
index 7e73f74..67f6570 100755
--- a/install-and-chroot.sh
+++ b/install-and-chroot.sh
@@ -37,7 +37,7 @@ fi
 sudo sed -e 's/#rc_sys=""/rc_sys="prefix"/g' -i "$DIR/etc/rc.conf"
 
 # Insert pkg++ configuration in chroot
-sudo mkdir -p /opt/pkgxx/dev && \
+sudo mkdir -p "$DIR/opt/pkgxx/dev" && \
   sudo cp "pkgxx.conf.example" "$DIR/etc/pkgxx.conf" || exit 1
 
 # Launch chroot