diff --git a/binary-search.html b/binary-search.html.markdown
similarity index 98%
rename from binary-search.html
rename to binary-search.html.markdown
index 68a54c2a..92df4875 100644
--- a/binary-search.html
+++ b/binary-search.html.markdown
@@ -60,4 +60,4 @@ There is another form of binary search that is very useful.
 ## Online Resources
 
 * [GeeksforGeeks](http://www.geeksforgeeks.org/the-ubiquitous-binary-search-set-1/)
-* [Topcoder Tutorial](https://www.topcoder.com/community/data-science/data-science-tutorials/binary-search/)
\ No newline at end of file
+* [Topcoder Tutorial](https://www.topcoder.com/community/data-science/data-science-tutorials/binary-search/)