diff --git a/scheduling-configuration-file.md b/scheduling-configuration-file.md
index 9dbbe102add61..c0d8e00a39387 100644
--- a/scheduling-configuration-file.md
+++ b/scheduling-configuration-file.md
@@ -44,7 +44,7 @@ The Scheduling node is used for providing the `scheduling` microservice for PD.
 
 ### `lease`
 
-- The timeout of the Scheduling Primary Key lease. After the timeout, the system re-elects a Primary.
+- The timeout of the Scheduling service's primary lease. After the timeout, the system re-elects a primary.
 - Default value: `3`
 - Unit: seconds
 
diff --git a/tso-configuration-file.md b/tso-configuration-file.md
index 69fd753ee64d1..e76496f352675 100644
--- a/tso-configuration-file.md
+++ b/tso-configuration-file.md
@@ -44,7 +44,7 @@ The TSO node is used for providing the `tso` microservice for PD. This document
 
 ### `lease`
 
-- The timeout of the TSO Primary Key lease. After the timeout, the system re-elects a Primary.
+- The timeout of the TSO service's primary lease. After the timeout, the system re-elects a primary.
 - Default value: `3`
 - Unit: seconds