diff --git a/changelog.d/6099.misc b/changelog.d/6099.misc
new file mode 100644
index 000000000..8415c6759
--- /dev/null
+++ b/changelog.d/6099.misc
@@ -0,0 +1 @@
+Remove unused parameter to get_user_id_by_threepid.
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index 805411a6b..5cf2c893a 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -495,7 +495,7 @@ class RegistrationWorkerStore(SQLBaseStore):
         )
 
     @defer.inlineCallbacks
-    def get_user_id_by_threepid(self, medium, address, require_verified=False):
+    def get_user_id_by_threepid(self, medium, address):
         """Returns user id from threepid
 
         Args: