diff --git a/runbot/models/build.py b/runbot/models/build.py
index bf25754b..6d10ad3f 100644
--- a/runbot/models/build.py
+++ b/runbot/models/build.py
@@ -287,7 +287,7 @@ class runbot_build(models.Model):
             ]
             candidates = self.search(domain)
 
-            nb_deps = len(repo.dependency_ids)
+            nb_deps = len(build_id.dependency_ids)
             if candidates and nb_deps:
                 # check that all depedencies are matching.