diff --git a/applications/image-processing.ipynb b/applications/image-processing.ipynb
index 85c0134c..7d7a8186 100644
--- a/applications/image-processing.ipynb
+++ b/applications/image-processing.ipynb
@@ -324,7 +324,7 @@
    "source": [
     "Next you'll want to do some image processing, and apply a function to your images.\n",
     "\n",
-    "We'll use a very simple example: converting an RGB image to grayscale. But you can also use this method to apply arbittrary functions to dask images. To convert our image to grayscale, we'll use the equation to calculate luminance ([reference pdf](http://www.poynton.com/PDFs/ColorFAQ.pdf))\": \n",
+    "We'll use a very simple example: converting an RGB image to grayscale. But you can also use this method to apply arbitrary functions to dask images. To convert our image to grayscale, we'll use the equation to calculate luminance ([reference pdf](http://www.poynton.com/PDFs/ColorFAQ.pdf))\": \n",
     "\n",
     "`Y = 0.2125 R + 0.7154 G + 0.0721 B` \n",
     "\n",