diff --git a/knowledge base/immutable oses.md b/knowledge base/immutable operating systems.md
similarity index 69%
rename from knowledge base/immutable oses.md
rename to knowledge base/immutable operating systems.md
index 7484294..416ffa3 100644
--- a/knowledge base/immutable oses.md	
+++ b/knowledge base/immutable operating systems.md	
@@ -1,9 +1,10 @@
-# Immutable OSes
+# Immutable operating systems
 
 ## Further readings
 
 - [Fedora Silverblue]
 - OpenSUSE [MicroOS]
 
+<!-- internal references -->
 [fedora silverblue]: fedora%20silverblue.md
 [microos]: microos.md