diff --git a/endpoints/trigger.py b/endpoints/trigger.py
index 4e8efbeb2..907abb966 100644
--- a/endpoints/trigger.py
+++ b/endpoints/trigger.py
@@ -517,7 +517,7 @@ class BitbucketBuildTrigger(BuildTriggerHandler):
     }
 
     # Add the commit's author.
-    if target.get('author') and 'user' in target['author']:
+    if target is not None and target.get('author') and 'user' in target['author']:
       commit_info['author'] = _build_user_block(target['author']['user'])
     elif data.get('raw_author'):
       # Try to lookup the author by email address. The raw_author field (if it exists) is returned