diff --git a/scripts/casper b/scripts/casper
index 36a724d2..1b9a6faf 100644
--- a/scripts/casper
+++ b/scripts/casper
@@ -379,18 +379,18 @@ do_interactive_netmount() {
     # maybe make livecd-rootfs embed something in the casper initrd?
     case $PRETTY_NAME in
         *development*)
-            server_url=http://cdimage.ubuntu.com/ubuntu-server/daily-live/current/$UBUNTU_CODENAME-live-server-$DPKG_ARCH.iso
-            desktop_url=http://cdimage.ubuntu.com/daily-live/current/$UBUNTU_CODENAME-desktop-$DPKG_ARCH.iso
+            server_url=""
+            desktop_url=""
             ;;
         *)
             case $DPKG_ARCH in
                 amd64)
-                    server_url=https://releases.ubuntu.com/$UBUNTU_CODENAME/ubuntu-$VERSION_ID-latest-live-server-$DPKG_ARCH.iso
-                    desktop_url=https://releases.ubuntu.com/$UBUNTU_CODENAME/ubuntu-$VERSION_ID-latest-desktop-$DPKG_ARCH.iso
+                    server_url=http://cdimage.trisquel.org/trisquel-images/${ID}-netinst_${VERSION_ID}_${DPKG_ARCH}.iso
+                    desktop_url=http://cdimage.trisquel.org/trisquel-images/${ID}_${VERSION_ID}_${DPKG_ARCH}.iso
                     ;;
                 *)
-                    server_url=http://cdimage.ubuntu.com/releases/$UBUNTU_CODENAME/release/ubuntu-$VERSION_ID-latest-live-server-$DPKG_ARCH.iso
-                    desktop_url=http://cdimage.ubuntu.com/releases/$UBUNTU_CODENAME/release/ubuntu-$VERSION_ID-latest-desktop-$DPKG_ARCH.iso
+                    server_url=http://cdimage.trisquel.org/trisquel-images/${ID}-netinst_${VERSION_ID}_${DPKG_ARCH}.iso
+                    desktop_url=http://cdimage.trisquel.org/trisquel-images/${ID}_${VERSION_ID}_${DPKG_ARCH}.iso
                     ;;
             esac
             ;;
