From 77a122787022c302f0b2abcb63bd2f7d8514d692 Mon Sep 17 00:00:00 2001
From: Richard van der Hoff <richard@matrix.org>
Date: Thu, 16 Nov 2017 16:03:38 +0000
Subject: [PATCH] Fix broken ref to IntegrityError

---
 synapse/storage/_base.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py
index 1582a5896..e6eefdd6f 100644
--- a/synapse/storage/_base.py
+++ b/synapse/storage/_base.py
@@ -503,7 +503,7 @@ class SQLBaseStore(object):
                     lock=lock
                 )
                 defer.returnValue(result)
-            except self.database_engine.IntegrityError as e:
+            except self.database_engine.module.IntegrityError as e:
                 # presumably we raced with another transaction: let's retry.
                 logger.warn(
                     "IntegrityError when upserting into %s; retrying: %s",