diff --git a/zuul/scheduler.py b/zuul/scheduler.py
index def7429..25f3ae0 100644
--- a/zuul/scheduler.py
+++ b/zuul/scheduler.py
@@ -810,7 +810,7 @@
         try:
             project = self.layout.projects.get(event.project_name)
             if not project:
-                self.log.warning("Project %s not found" % event.project_name)
+                self.log.debug("Project %s not found" % event.project_name)
                 return
 
             for pipeline in self.layout.pipelines.values():