diff --git a/Exercise sheet 6/exercise_sheet_06.ipynb b/Exercise sheet 6/exercise_sheet_06.ipynb
index 43806ec..dd8f281 100644
--- a/Exercise sheet 6/exercise_sheet_06.ipynb	
+++ b/Exercise sheet 6/exercise_sheet_06.ipynb	
@@ -475,7 +475,6 @@
     "    return dt\n",
     "\n",
     "with h5py.File('xy_data.hdf5','a') as f:\n",
-    "    #del f[\"cluster-size\"]\n",
     "    if not \"cluster-size\" in f:\n",
     "        state = xy_aligned_init_config(width)\n",
     "        cluster_sizes = np.zeros(len(temperatures))\n",