diff --git a/deluge/core/torrentmanager.py b/deluge/core/torrentmanager.py
index 60e7d1bee..f0c154a4d 100644
--- a/deluge/core/torrentmanager.py
+++ b/deluge/core/torrentmanager.py
@@ -292,7 +292,7 @@ class TorrentManager(component.Component):
             filedump = lt.bdecode(_file.read())
             _file.close()
         except (IOError, RuntimeError), e:
-            log.warning("Unable to open %s: e", filename, e)
+            log.warning("Unable to open %s: %s", filename, e)
             return False
         
         return filedump