diff --git a/endpoints/trigger.py b/endpoints/trigger.py
index 8114278d4..8a844a13c 100644
--- a/endpoints/trigger.py
+++ b/endpoints/trigger.py
@@ -315,8 +315,8 @@ class GithubBuildTrigger(BuildTrigger):
 
   def handle_trigger_request(self, request, auth_token, config):
     payload = request.get_json()
-    if not payload:
-      raise SkipRequestException()      
+    if not payload or not 'head_commit' in payload:
+      raise SkipRequestException()
     
     if 'zen' in payload:
       raise ValidationRequestException()