diff --git a/examples/jupyter/mgxs-part-iii.ipynb b/examples/jupyter/mgxs-part-iii.ipynb
index 58c137608..bf871501c 100644
--- a/examples/jupyter/mgxs-part-iii.ipynb
+++ b/examples/jupyter/mgxs-part-iii.ipynb
@@ -411,7 +411,7 @@
     "plot.origin = [0, 0, 0]\n",
     "plot.pixels = [250, 250]\n",
     "plot.width = [-10.71*2, -10.71*2]\n",
-    "plot.color = 'mat'\n",
+    "plot.color_by = 'material'\n",
     "\n",
     "# Instantiate a Plots object, add Plot, and export to \"plots.xml\"\n",
     "plot_file = openmc.Plots([plot])\n",