diff --git a/module2/exo2/exercice.ipynb b/module2/exo2/exercice.ipynb
index 375fe6671e59cbc5573c6400408f90dba9c52566..41d1f49b07fe1319c2f66f558acd2e4826b08db8 100644
--- a/module2/exo2/exercice.ipynb
+++ b/module2/exo2/exercice.ipynb
@@ -69,7 +69,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": 15,
    "metadata": {},
    "outputs": [
     {
@@ -78,13 +78,13 @@
        "4.334094455301447"
       ]
      },
-     "execution_count": 7,
+     "execution_count": 15,
      "metadata": {},
      "output_type": "execute_result"
     }
    ],
    "source": [
-    "np.std(L,ddof = 1)"
+    "np.std(L, ddof = 1)"
    ]
   },
   {