diff --git a/Documentation/README.md b/Documentation/README.md
index 923af70..77bb0d2 100644
--- a/Documentation/README.md
+++ b/Documentation/README.md
@@ -79,7 +79,7 @@ The project file contains reference information about the project the topics bel
 
  Attribute | Optional | Description |
 :-----------|:------------|:------------:
- ProjectId  |        Yes |     ProjectId of the project
+ ProjectId  |        No   |     ProjectId of the project
 
  In addition it has the following nodes: