1 files changed, 1 insertions, 3 deletions
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index 0f9d898e5d..f7d8291281 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -15,8 +15,6 @@
 
 from twisted.internet import defer
 
-from sqlite3 import IntegrityError
-
 from synapse.api.errors import StoreError, Codes
 
 from ._base import SQLBaseStore, cached
@@ -76,7 +74,7 @@ class RegistrationStore(SQLBaseStore):
             txn.execute("INSERT INTO users(name, password_hash, creation_ts) "
                         "VALUES (?,?,?)",
                         [user_id, password_hash, now])
-        except IntegrityError:
+        except self.database_engine.module.IntegrityError:
             raise StoreError(
                 400, "User ID already taken.", errcode=Codes.USER_IN_USE
             )