diff --git a/crates/handlers/src/views/register/password.rs b/crates/handlers/src/views/register/password.rs
index 65ba5fe0d..5aac09b4d 100644
--- a/crates/handlers/src/views/register/password.rs
+++ b/crates/handlers/src/views/register/password.rs
@@ -626,7 +626,7 @@ mod tests {
         cookies.save_cookies(&response);
         response.assert_status(StatusCode::OK);
         assert!(
-            response.body().contains("Username is too long"),
+            response.body().contains("PostNumber is too long"),
             "response body: {}",
             response.body()
         );
@@ -680,7 +680,7 @@ mod tests {
         let response = state.request(request).await;
         cookies.save_cookies(&response);
         response.assert_status(StatusCode::OK);
-        assert!(response.body().contains("This username is already taken"));
+        assert!(response.body().contains("This postNumber is already taken"));
     }
 
     /// When the username is already reserved on the homeserver, it should give
@@ -726,7 +726,7 @@ mod tests {
         let response = state.request(request).await;
         cookies.save_cookies(&response);
         response.assert_status(StatusCode::OK);
-        assert!(response.body().contains("This username is already taken"));
+        assert!(response.body().contains("This postNumber is already taken"));
     }
 
     /// Test registration without email when email is not required