diff --git a/2015/2015-01-14-setting-up-a-simple-ocr-server.markdown b/2015/2015-01-14-setting-up-a-simple-ocr-server.markdown
index 405b9bb..1c0d776 100644
--- a/2015/2015-01-14-setting-up-a-simple-ocr-server.markdown
+++ b/2015/2015-01-14-setting-up-a-simple-ocr-server.markdown
@@ -163,7 +163,7 @@ from StringIO import StringIO
 
 def process_image(url):
     image = _get_image(url)
-    image.filter(ImageFilter.SHARPEN)
+    image = image.filter(ImageFilter.SHARPEN)
     return pytesseract.image_to_string(image)
 
 
@@ -307,4 +307,4 @@ Hope you enjoyed this tutorial. Grab the final code [here](https://github.com/rh
 
 Happy hacking.
 
-:)
\ No newline at end of file
+:)