diff --git a/src/user.rs b/src/user.rs
index b0f7b99..356cd28 100644
--- a/src/user.rs
+++ b/src/user.rs
@@ -86,6 +86,7 @@ impl UserMap {
     }
 
     /// Inserts the given user info for the given user name in the mapping.
+    /// If there is already data under that name, it is replaced.
     pub fn insert(&mut self, name: String, user: User) {
         self.map.insert(name, user);
     }