diff --git a/files/dl/ds/itc/ds_x23_differentiel/x23.ipynb b/files/dl/ds/itc/ds_x23_differentiel/x23.ipynb
index 3c7792fc..82fc9f2e 100644
--- a/files/dl/ds/itc/ds_x23_differentiel/x23.ipynb
+++ b/files/dl/ds/itc/ds_x23_differentiel/x23.ipynb
@@ -4,9 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# DS 1 MP* Corrigé (X-ENS 2023)\n",
-    "\n",
-    "[Sujet](https://banques-ecoles.fr/cms/wp-content/uploads/2023/08/23_mppc_sujet_InfoB.pdf)"
+    "# DS 1 MP* Corrigé (X-ENS 2023)"
    ]
   },
   {