diff -r b65a95eb9f6b -r 5667d2bbdc50 log_source.py
--- a/log_source.py	Mon Feb 09 04:39:24 2009 +0200
+++ b/log_source.py	Mon Feb 09 05:44:29 2009 +0200
@@ -351,9 +351,12 @@
             # open both of them
             f_begin = self._get_logfile_date(d_begin)
             f_end = self._get_logfile_date(d_end)
-            
+
             # chain together the two sources
-            return itertools.chain(f_begin.read_from(dtz_begin), f_end.read_until(dtz_end))
+            return itertools.chain(
+                f_begin.read_from(dtz_begin), 
+                f_end.read_until(dtz_end) if f_end else []
+            )
 
     def get_month_days (self, month) :
         """