diff --git a/notebooks/witzit-plot.ipynb b/notebooks/witzit-plot.ipynb
index b15112d..6e6d619 100644
--- a/notebooks/witzit-plot.ipynb
+++ b/notebooks/witzit-plot.ipynb
@@ -55,7 +55,7 @@
     "# Olympus Vanta-M XRF Example\n",
     "#datafile=('examples/olympus-vanta.csv')\n",
     "# SciAps X-555 XRF Example\n",
-    "#datafile=('examples/sciaps-x555.mca')\n",
+    "datafile=('examples/sciaps-x555.mca')\n",
     "# Fail examples\n",
     "#datafile=('examples/foo.csv')\n",
     "#datafile=('examples/sciaps-x555.csv')"