diff --git a/src/log.py b/src/log.py
index 94f4a7f4a56e3a6a5a9352b5d09143d50c959bc9..d5c1e36f8564b55f5426490f6b19fdaf20d61ed3 100644
--- a/src/log.py
+++ b/src/log.py
@@ -276,7 +276,11 @@ class LogManager(object):
         # FIXME warning capture on multiple processors
 
         def _showwarning(message, category, filename, lineno, file=None, line=None):
-            self.old_showwarning(message, category, filename, lineno, file, line)
+            try:
+                self.old_showwarning(message, category, filename, lineno, file, line)
+            except TypeError:
+                # cater to Python 2.5 and earlier
+                self.old_showwarning(message, category, filename, lineno)
 
             if (self.db_conn is not None 
                     and self.schema_version >= 1