1 files changed, 4 insertions, 0 deletions
diff --git a/bin/update b/bin/update
index ac83094a..bb4682d3 100755
--- a/bin/update
+++ b/bin/update
@@ -442,6 +442,10 @@ def update_qfiles():
             for filename in os.listdir(dirpath):
                 filepath = os.path.join(dirpath, filename)
                 filebase, ext = os.path.splitext(filepath)
+                # A bug in Mailman 2.1.9 left .bak files behind in some
+                # circumstances. It should be safe to remove them.
+                if ext == '.bak':
+                    os.remove(filepath)
                 # Handle the .db metadata files as part of the handling of the
                 # .pck or .msg message files.
                 if ext not in ('.pck', '.msg'):