diff --git a/scripts/phabtalk/apply_patch2.py b/scripts/phabtalk/apply_patch2.py
index 5b147f9..536076d 100755
--- a/scripts/phabtalk/apply_patch2.py
+++ b/scripts/phabtalk/apply_patch2.py
@@ -257,7 +257,7 @@ class ApplyPatch:
         earliest_commit = None
         rev = self.base_revision
         age_limit = datetime.datetime.now() - APPLIED_SCAN_LIMIT
-        if rev is None:
+        if rev != 'auto':
             rev = 'master'
         for commit in self.repo.iter_commits(rev):
             if datetime.datetime.fromtimestamp(commit.committed_date) < age_limit: