diff --git a/eventlet/db_pool.py b/eventlet/db_pool.py
index 27c2241..f9f117b 100644
--- a/eventlet/db_pool.py
+++ b/eventlet/db_pool.py
@@ -82,7 +82,7 @@ class BaseConnectionPool(Pool):
             age_delay = (oldest - now) + self.max_age
 
             next_delay = min(idle_delay, age_delay)
-        except IndexError, ValueError:
+        except (IndexError, ValueError):
             # no free items, unschedule ourselves
             self._expiration_timer = None
             return