diff --git a/Cartopy/cartopy-favicon.ipynb b/Cartopy/cartopy-favicon.ipynb
index 6417a2a..8a37ea1 100644
--- a/Cartopy/cartopy-favicon.ipynb
+++ b/Cartopy/cartopy-favicon.ipynb
@@ -30,7 +30,7 @@
     "    ax.gridlines()\n",
     "    ax.stock_img()\n",
     "\n",
-    "    # Generate a matplotlib path representing the character "C".\n",
+    "    # Generate a matplotlib path representing the character 'C'.\n",
     "    fp = FontProperties(family='DejaVu Sans', weight='bold')\n",
     "    logo_path = matplotlib.textpath.TextPath((-4.5e7, -3.7e7),\n",
     "                                             'C', size=103250000, prop=fp)\n",
diff --git a/Cartopy/cartopy-logo.ipynb b/Cartopy/cartopy-logo.ipynb
index 722fbd4..9c3e9a0 100644
--- a/Cartopy/cartopy-logo.ipynb
+++ b/Cartopy/cartopy-logo.ipynb
@@ -27,7 +27,7 @@
     "     ax.coastlines()\n",
     "    ax.gridlines()\n",
     " \n",
-    "     # generate a matplotlib path representing the word "cartopy"\n",
+    "     # generate a matplotlib path representing the word 'cartopy'\n",
     "     fp = FontProperties(family='DejaVu Sans', weight='bold')\n",
     "     logo_path = matplotlib.textpath.TextPath((-175, -35), 'cartopy',\n",
     "                                              size=80, prop=fp)\n",