diff --git a/Posts/OperatingSystem b/Posts/OperatingSystem
index 726f689..a031bc8 100644
--- a/Posts/OperatingSystem
+++ b/Posts/OperatingSystem
@@ -2,7 +2,7 @@
 title: Operating systems
 author: hannes
 tags: overview, operating system, mirageos
-abstract: Basics of OS and MirageOS
+abstract: Operating systems and MirageOS
 ---
 
 ## Remark about this site