diff --git a/daphne/http_protocol.py b/daphne/http_protocol.py
index df9f93a..41e8552 100755
--- a/daphne/http_protocol.py
+++ b/daphne/http_protocol.py
@@ -312,7 +312,7 @@ class HTTPFactory(http.HTTPFactory):
     routed appropriately.
     """
 
-    def __init__(self, channel_layer, action_logger=None, send_channel=None, timeout=120, websocket_timeout=86400, ping_interval=20, ping_timeout=30, ws_protocols=None, root_path="", websocket_connect_timeout=30, proxy_forwarded_address_header=None, proxy_forwarded_port_header=None, websocket_handshake_timeout=5):
+    def __init__(self, channel_layer, action_logger=None, send_channel=None, timeout=120, websocket_timeout=86400, ping_interval=20, ping_timeout=30, ws_protocols=None, root_path="", websocket_connect_timeout=30, proxy_forwarded_address_header=None, proxy_forwarded_port_header=None, proxy_forwarded_proto_header=None, websocket_handshake_timeout=5):
         http.HTTPFactory.__init__(self)
         self.channel_layer = channel_layer
         self.action_logger = action_logger
@@ -324,6 +324,7 @@ class HTTPFactory(http.HTTPFactory):
         self.ping_interval = ping_interval
         self.proxy_forwarded_address_header = proxy_forwarded_address_header
         self.proxy_forwarded_port_header = proxy_forwarded_port_header
+        self.proxy_forwarded_proto_header = proxy_forwarded_proto_header
         # We track all sub-protocols for response channel mapping
         self.reply_protocols = {}
         # Make a factory for WebSocket protocols