diff --git a/_Sidebar.md b/_Sidebar.md
index b8f206b..1d3212b 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -1,5 +1,5 @@
 **Navigation**
 
-_**Problem Defenition**_
+_**Problem Defenition:**_
 
 [Persona](https://git.missing.ninja/hackathon/BoskoopBase/wiki/Persona%3A-Farmer-Example)