diff --git a/is/UB3/ExerciseSheet3Max.ipynb b/is/UB3/ExerciseSheet3Max.ipynb
index 61d6e1a..1834efe 100644
--- a/is/UB3/ExerciseSheet3Max.ipynb
+++ b/is/UB3/ExerciseSheet3Max.ipynb
@@ -1241,7 +1241,7 @@
     }
    ],
    "source": [
-    "\n",
+    "# optimal d = 6\n",
     "def plot():\n",
     "    X = construct_poly(x,6)  \n",
     "    Xt = construct_poly(xt,6) #n=d\n",