diff --git a/src/client/Client.cpp b/src/client/Client.cpp
index 0c43c24d1..eae84f72f 100644
--- a/src/client/Client.cpp
+++ b/src/client/Client.cpp
@@ -940,6 +940,7 @@ Client::~Client()
 void Client::SetAuthUser(User user)
 {
 	authUser = user;
+	WritePrefs();
 	notifyAuthUserChanged();
 }