diff --git a/scrapy/core/downloader/tls.py b/scrapy/core/downloader/tls.py
index 1c3d94b29..4ed482058 100644
--- a/scrapy/core/downloader/tls.py
+++ b/scrapy/core/downloader/tls.py
@@ -29,8 +29,7 @@ openssl_methods = {
 
 
 if twisted_version < (17, 0, 0):
-    from twisted.internet._sslverify import _maybeSetHostNameIndication
-    set_tlsext_host_name = _maybeSetHostNameIndication
+    from twisted.internet._sslverify import _maybeSetHostNameIndication as set_tlsext_host_name
 else:
     def set_tlsext_host_name(connection, hostNameBytes):
         connection.set_tlsext_host_name(hostNameBytes)