diff --git a/CHANGELOG.md b/CHANGELOG.md
index a49992ffb..815695ea2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 - Updated sidekiq-unique-jobs to 7.1.23 to get rid of Sidekiq's default_worker_options deprecation warning
 - Allow moving with arrows in the setup script's inputs
+- Fix a bug: unable to connect with OAuth2
 - Fix a bug: when installing fab-manager as non-root user, most of the resulting installation directories were owned by root
 - Fix a bug: unable to edit OIDC provider
 - Fix a bug: list of OIDC scopes are loading indefinitely
diff --git a/lib/omni_auth/strategies/sso_oauth2_provider.rb b/lib/omni_auth/strategies/sso_oauth2_provider.rb
index 70f3e89a5..150f23393 100644
--- a/lib/omni_auth/strategies/sso_oauth2_provider.rb
+++ b/lib/omni_auth/strategies/sso_oauth2_provider.rb
@@ -30,7 +30,7 @@ module OmniAuth::Strategies
 
     def authorize_params
       super.tap do |params|
-        params[:scope] = active_provider.providable.scopes
+        params[:scope] = OmniAuth::Strategies::SsoOauth2Provider.active_provider.providable.scopes
       end
     end