diff --git a/Rasterio/data_viz.ipynb b/Rasterio/data_viz.ipynb
index 35f42a7..313fefc 100644
--- a/Rasterio/data_viz.ipynb
+++ b/Rasterio/data_viz.ipynb
@@ -182,7 +182,7 @@
    "outputs": [],
    "source": [
     "plot.show_hist(world, bins=20, lw=2.0, stacked=True,\n",
-    "               alpha=0.8, histtype='step', normed=True, \n",
+    "               alpha=0.8, histtype='step',  \n",
     "               title=\"World Histogram stacked\")"
    ]
   },