diff --git a/notebooks/seminar09.ipynb b/notebooks/seminar09.ipynb
index 9b030967118d944eb2370274c0de0fcefc6d481e..ea1b6bf301bd85a9d2782a7bd3cf7bf0598a215f 100644
--- a/notebooks/seminar09.ipynb
+++ b/notebooks/seminar09.ipynb
@@ -621,6 +621,13 @@
     "    return is_reverse(word, word)"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "... indem wir `is_reverse` aus [Abschnitt 8.11](seminar08.ipynb#8.11-Debugging) verwenden. "
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -645,13 +652,6 @@
     "(Testen kann uns zwar helfen, Bugs zu finden, jedoch nicht, ihre Abwesenheit zu beweisen.)"
    ]
   },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "... indem wir `is_reverse` aus [Abschnitt 8.11](seminar08.ipynb#8.11-Debugging) verwenden. "
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {},