diff --git a/docs/workers.md b/docs/workers.md
index 9bda0f8c2..582ad48cd 100644
--- a/docs/workers.md
+++ b/docs/workers.md
@@ -261,7 +261,7 @@ using):
     # for all SSO providers
     ^/_matrix/client/(api/v1|r0|unstable)/login/sso/redirect
     ^/_synapse/client/pick_idp$
-    ^/_synapse/client/pick_username
+    ^/_synapse/client/pick_username$
     ^/_synapse/client/new_user_consent$
     ^/_synapse/client/sso_register$