diff --git a/_posts/2017-10-11-Coal.md b/_posts/2017-10-11-Coal.md
index 86beecb92bffe..e6e523f475167 100644
--- a/_posts/2017-10-11-Coal.md
+++ b/_posts/2017-10-11-Coal.md
@@ -1,6 +1,6 @@
 ---
 layout: post
-title: Coal Composition of Linear Functions
+title: Coal: Composition of Linear Functions
 published: true
 ---
 This code automatizes composition of linear functions.