diff --git a/source/4/4.3/software_sources.rst b/source/4/4.3/software_sources.rst
index 9c6cd4fb..8e10409f 100644
--- a/source/4/4.3/software_sources.rst
+++ b/source/4/4.3/software_sources.rst
@@ -56,4 +56,4 @@ How to Launch
     
 The icon for Software Sources looks like a blue circle with a white downward pointing arrow.
 
-tags:PPA, software, download, sources, release, update, discover, muon, security, 
+tags:PPA, software, download, sources, release, update, Discover, Muon, security,