diff --git a/Documentation.md b/Documentation.md
index 76b4365..27ece22 100644
--- a/Documentation.md
+++ b/Documentation.md
@@ -20,7 +20,7 @@ OpenAIRE services are using Spring Security to authenticate users and check thei
 
 ## Role Management
 
-This web service provides 4 controllers with methods to create, assign or revoke roles from users and retrieve information of users with a specific Authority. If Authorities' list of a user has been changed, the his active sessions will be updated automatically from this service.
+This web service provides 4 controllers with methods to create, assign or revoke roles from users and retrieve information of users with a specific Authority. If Authorities' list of a user has been changed, then his active sessions will be updated automatically from this service.
 There are two options in order to update user's Authorities.
 * Give a header named **Session** with value the session id.
 * Give user's email. If this parameter is present then it has priority.