diff --git a/specification/client_server_api.rst b/specification/client_server_api.rst
index 581f0c28..fce879a2 100644
--- a/specification/client_server_api.rst
+++ b/specification/client_server_api.rst
@@ -794,7 +794,7 @@ Single Sign-On
 A client wanting to complete authentication using SSO should use the
 `Fallback`_ authentication flow by opening a browser window for
 ``/_matrix/client/r0/auth/m.login.sso/fallback/web?session=<...>`` with the
-session parameter set to the session ID provied by the server.
+session parameter set to the session ID provided by the server.
 
 The homeserver should return a page which asks for the user's confirmation
 before proceeding. For example, the page could say words to the effect of: