diff --git a/kappa/function.py b/kappa/function.py
index a81e0e0..2940930 100644
--- a/kappa/function.py
+++ b/kappa/function.py
@@ -278,7 +278,7 @@ def tail(self, attempt=0):
         try:
             LOG.debug('tailing function: %s', self.name)
             return self.log.tail()
-        except Exception, e:
+        except Exception as e:
             if attempt > 10:
                 return e