diff --git a/src/api/client/session/sso.rs b/src/api/client/session/sso.rs
index 6cd30430..1c5dd0e4 100644
--- a/src/api/client/session/sso.rs
+++ b/src/api/client/session/sso.rs
@@ -479,6 +479,7 @@ async fn register_user(
 			password: Some("*"),
 			origin: Some("sso"),
 			displayname: userinfo.name.as_deref(),
+			grant_first_user_admin: true,
 			..Default::default()
 		})
 		.await?;