1 files changed, 2 insertions, 0 deletions
diff --git a/synapse/storage/keys.py b/synapse/storage/keys.py
index 253dc17be2..8189e071a3 100644
--- a/synapse/storage/keys.py
+++ b/synapse/storage/keys.py
@@ -65,6 +65,7 @@ class KeyStore(SQLBaseStore):
                 "ts_added_ms": time_now_ms,
                 "tls_certificate": buffer(tls_certificate_bytes),
             },
+            or_ignore=True,
         )
 
     @defer.inlineCallbacks
@@ -113,4 +114,5 @@ class KeyStore(SQLBaseStore):
                 "ts_added_ms": time_now_ms,
                 "verify_key": buffer(verify_key.encode()),
             },
+            or_ignore=True,
         )