diff --git a/roles/mgrote_rsync/templates/rsync_mirror.sh.j2 b/roles/mgrote_rsync/templates/rsync_mirror.sh.j2
index 2d66faf9..f3797695 100644
--- a/roles/mgrote_rsync/templates/rsync_mirror.sh.j2
+++ b/roles/mgrote_rsync/templates/rsync_mirror.sh.j2
@@ -14,8 +14,10 @@ if [[ "$(/usr/sbin/zfs get mounted -H {{ item.src | regex_replace('^/', '') }} |
     {# "/" am Ende von Src+Dest ist Wichtig und notwendig, sonst wird in Unterordner kopiert #}
   else
     echo "Destination-Dataset not mounted!"
+    exit 1
   fi
 else
   echo "Source-Dataset not mounted!"
+  exit 1
 fi
 {% endfor %}