diff --git a/docs/overview/about-harmonyOS.rst b/docs/overview/about-harmonyOS.rst
index 65768a8ec97c4fa42ceefd57bde9447f0d9010b0..5f6b59d4c7939319ab31085bf0a8216bd4db64f4 100644
--- a/docs/overview/about-harmonyOS.rst
+++ b/docs/overview/about-harmonyOS.rst
@@ -1,4 +1,4 @@
-About HarmonyOS
+About Harmony OS
 ===============
 
 System Positioning