diff --git a/archiso/hooks/archiso b/archiso/hooks/archiso
index 336a014..bed8f7a 100644
--- a/archiso/hooks/archiso
+++ b/archiso/hooks/archiso
@@ -103,6 +103,10 @@ run_hook ()
 
     msg ":: Mounting root (aufs) filesystem"
     /bin/mount -t aufs -o dirs=/tmpfs=rw none /real_root
+    if [ $? -ne 0 ]; then
+        echo "ERROR: while mounting root (aufs) filesystem."
+        exit 1
+    fi
 
     export LOOP_NUM="0"
     msg ":: Mounting images"