diff --git a/src/IDF/Project.php b/src/IDF/Project.php
index 8c07deb..caea6ce 100644
--- a/src/IDF/Project.php
+++ b/src/IDF/Project.php
@@ -358,6 +358,7 @@ class IDF_Project extends Pluf_Model
         $conf = $this->getConf();
         $scm = $conf->getVal('scm', 'git');
         $scms = Pluf::f('allowed_scm');
+        Pluf::loadClass($scms[$scm]);
         return call_user_func(array($scms[$scm], 'getAnonymousAccessUrl'),
                               $this);
     }
@@ -374,6 +375,7 @@ class IDF_Project extends Pluf_Model
         $conf = $this->getConf();
         $scm = $conf->getVal('scm', 'git');
         $scms = Pluf::f('allowed_scm');
+        Pluf::loadClass($scms[$scm]);
         return call_user_func(array($scms[$scm], 'getAuthAccessUrl'),
                               $this, $user);
     }