diff --git a/docs/DeveloperGuide.md b/docs/DeveloperGuide.md
index 54242f3af47..8f4bf7fad47 100644
--- a/docs/DeveloperGuide.md
+++ b/docs/DeveloperGuide.md
@@ -820,7 +820,7 @@ otherwise)
 **MSS**
 
 1. User requests to add a student.
-2. ProfBook deletes the person.
+2. ProfBook adds the student to the specified group.
 
    Use case ends.