diff --git a/app/controllers/users/omniauth_callbacks_controller.rb b/app/controllers/users/omniauth_callbacks_controller.rb
index 9e6baaa0c..8484240f8 100644
--- a/app/controllers/users/omniauth_callbacks_controller.rb
+++ b/app/controllers/users/omniauth_callbacks_controller.rb
@@ -57,7 +57,7 @@ module Users
         end
 
         sign_in_and_redirect(user)
-      elsif provider_conf[:auto_link_on_sign_in]
+      elsif provider_conf['auto_link_on_sign_in']
         # Link to existing local account
         user.user_identities.create!(provider: auth.provider, uid: auth.uid)
         user.update!(confirmed_at: user.created_at) if user.confirmed_at.blank?