diff --git a/Exercise sheet 6/exercise_sheet_06.ipynb b/Exercise sheet 6/exercise_sheet_06.ipynb
index 738ac6c..d04ff24 100644
--- a/Exercise sheet 6/exercise_sheet_06.ipynb	
+++ b/Exercise sheet 6/exercise_sheet_06.ipynb	
@@ -289,6 +289,8 @@
     "    cluster_size = 1\n",
     "    while unvisited:\n",
     "        site = unvisited.pop()\n",
+    "        # As the site is already added to the queue, it has already been flipped\n",
+    "        # so we need to take a minus into account.\n",
     "        s_i_n = -state[site]@nhat\n",
     "        for nbr in neighboring_sites(site,w):\n",
     "            s_j_n = state[nbr]@nhat\n",