diff --git a/notebooks/01.04-Input-Output-History.ipynb b/notebooks/01.04-Input-Output-History.ipynb
index c8e5463fe..c646a6555 100644
--- a/notebooks/01.04-Input-Output-History.ipynb
+++ b/notebooks/01.04-Input-Output-History.ipynb
@@ -157,7 +157,7 @@
     "In [14]: math.sin(2) + math.cos(2);\n",
     "```\n",
     "\n",
-    "Note that the result is computed silently, and the output is neither displayed on the screen or stored in the ``Out`` dictionary:\n",
+    "Note that the result is computed silently, and the output is neither displayed on the screen nor stored in the ``Out`` dictionary:\n",
     "\n",
     "```ipython\n",
     "In [15]: 14 in Out\n",