diff --git a/endpoints/trigger.py b/endpoints/trigger.py
index db4ccd91e..f281b83b7 100644
--- a/endpoints/trigger.py
+++ b/endpoints/trigger.py
@@ -333,23 +333,31 @@ class BitbucketBuildTrigger(BuildTriggerHandler):
 
   def deactivate(self):
     config = self.config
-    repository = self._get_repository_client()
 
-    # Remove the webhook link.
-    (result, _, err_msg) = repository.services().delete(config['hook_id'])
-    if not result:
-      msg = 'Unable to remove webhook from repository: %s' % err_msg
+    hook_id = config.pop('hook_id', None)
+    deploy_key_id = config.pop('deploy_key_id', None)
+
+    try:
+      repository = self._get_repository_client()
+
+      # Remove the webhook link.
+      if hook_id is not None:
+        (result, _, err_msg) = repository.services().delete(hook_id)
+        if not result:
+          msg = 'Unable to remove webhook from repository: %s' % err_msg
+          raise TriggerDeactivationException(msg)
+
+      # Remove the public key.
+      if deploy_key_id is not None:
+        (result, _, err_msg) = repository.deploykeys().delete(deploy_key_id)
+        if not result:
+          msg = 'Unable to remove deploy key from repository: %s' % err_msg
+          raise TriggerDeactivationException(msg)
+    except GitHubBadCredentialsException:
+      msg = ('Unable to remove trigger as credentials are invalid. ' +
+             'Please manually remove the webhook and deploy key.')
       raise TriggerDeactivationException(msg)
 
-    # Remove the public key.
-    (result, _, err_msg) = repository.deploykeys().delete(config['deploy_key_id'])
-    if not result:
-      msg = 'Unable to remove deploy key from repository: %s' % err_msg
-      raise TriggerDeactivationException(msg)
-
-    config.pop('hook_id', None)
-    config.pop('deploy_key_id', None)
-
     return config
 
   def list_build_sources(self):