diff --git a/config/ProjectConfiguration.class.php b/config/ProjectConfiguration.class.php
index f8b866a8dc..6298d877fb 100644
--- a/config/ProjectConfiguration.class.php
+++ b/config/ProjectConfiguration.class.php
@@ -48,6 +48,12 @@ public function setup()
             'sfPluginAdminPlugin',
         ];
 
+        // Check if the OIDC plugin should be enabled.
+        $filePath = 'activate-oidc-plugin';
+        if (file_exists($filePath) && filesize($filePath) === 0) {
+            $plugins[] = 'arOidcPlugin';
+        }
+
         $this->enablePlugins($plugins);
 
         $this->dispatcher->connect(