diff --git a/docs/20-Requirement-management/wide-requirement-specification.md b/docs/20-Requirement-management/wide-requirement-specification.md
index 7b770bb37e4464786dc50d35d88502a937466c2b..7e2174902e49608e16fff4ee0d80c844fe05f1eb 100644
--- a/docs/20-Requirement-management/wide-requirement-specification.md
+++ b/docs/20-Requirement-management/wide-requirement-specification.md
@@ -270,15 +270,15 @@ Update the list later when it refines?
 ```plantuml
 @startmindmap
 + Product
-++ Feature X1
+++ Feature Internal Mail
 +++ The user can send mail to another person
 +++ Functionality Z2
-++ Feature X2
+++ Feature Bill Management
 +++ The person can pay the bill
 +++ Functionality Z3
--- Feature X3
+-- Feature Cart Manager
 --- Functionality Z10
---- The user can send mail to another person
+--- The customer receives information about previous selections
 -- Feature X4
 --- Functionality Z15
 --- Functionality Z16