diff --git a/hgext/remotefilelog/remotefilelog.py b/hgext/remotefilelog/remotefilelog.py
--- a/hgext/remotefilelog/remotefilelog.py
+++ b/hgext/remotefilelog/remotefilelog.py
@@ -196,6 +196,8 @@
     def __nonzero__(self):
         return True
 
+    __bool__ = __nonzero__
+
     def __len__(self):
         if self.filename == '.hgtags':
             # The length of .hgtags is used to fast path tag checking.