1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py
index 0d85fd0868..94b5610acd 100644
--- a/synapse/handlers/register.py
+++ b/synapse/handlers/register.py
@@ -187,7 +187,7 @@ class RegistrationHandler(BaseHandler):
         """
         self.check_registration_ratelimit(address)
 
-        result = self.spam_checker.check_registration_for_spam(
+        result = await self.spam_checker.check_registration_for_spam(
             threepid, localpart, user_agent_ips or [],
         )