diff --git a/setup.py b/setup.py
index b02f21d..fd7381e 100755
--- a/setup.py
+++ b/setup.py
@@ -52,7 +52,7 @@ except:
 
 setuptools.setup(
         name='warcprox',
-        version='2.3.1b4.dev126',
+        version='2.3.1b4.dev127',
         description='WARC writing MITM HTTP/S proxy',
         url='https://github.com/internetarchive/warcprox',
         author='Noah Levitt',
diff --git a/warcprox/trough.py b/warcprox/trough.py
index 8c967fe..76aafed 100644
--- a/warcprox/trough.py
+++ b/warcprox/trough.py
@@ -72,12 +72,13 @@ class TroughClient(object):
                     self._dirty_segments.clear()
                 logging.info(
                         'promoting %s trough segments', len(dirty_segments))
-                for segment in dirty_segments:
+                for segment_id in dirty_segments:
                     try:
-                        self.promote(segment)
+                        self.promote(segment_id)
                     except:
                         logging.error(
-                                'problem promoting segment %s', exc_info=True)
+                                'problem promoting segment %s', segment_id,
+                                exc_info=True)
             except:
                 logging.error(
                         'caught exception doing segment promotion',