diff --git a/zulip/integrations/bridge_with_irc/irc-mirror.py b/zulip/integrations/bridge_with_irc/irc-mirror.py
index 7b35fa1..746d4d9 100755
--- a/zulip/integrations/bridge_with_irc/irc-mirror.py
+++ b/zulip/integrations/bridge_with_irc/irc-mirror.py
@@ -15,11 +15,13 @@ import traceback
 if False:
     from typing import Any, Dict
 
-usage = """./irc-mirror.py --irc-server=IRC_SERVER --channel=<CHANNEL> --nick-prefix=<NICK> [optional args]
+usage = """./irc-mirror.py --irc-server=IRC_SERVER --channel=<CHANNEL> --nick-prefix=<NICK> --stream=<STREAM> [optional args]
 
 Example:
 
-./irc-mirror.py --irc-server=127.0.0.1 --channel='#test' --nick-prefix=username
+./irc-mirror.py --irc-server=127.0.0.1 --channel='#test' --nick-prefix=username --stream='test'
+
+--stream is a Zulip stream.
 
 Specify your Zulip API credentials and server in a ~/.zuliprc file or using the options.
 
@@ -35,6 +37,7 @@ if __name__ == "__main__":
     parser.add_argument('--port', default=6667)
     parser.add_argument('--nick-prefix', default=None)
     parser.add_argument('--channel', default=None)
+    parser.add_argument('--stream', default="general")
 
     options = parser.parse_args()
     # Setting the client to irc_mirror is critical for this to work
@@ -52,5 +55,5 @@ if __name__ == "__main__":
         parser.error("Missing required argument")
 
     nickname = options.nick_prefix + "_zulip"
-    bot = IRCBot(zulip_client, options.channel, nickname, options.irc_server, options.port)
+    bot = IRCBot(zulip_client, options.stream, options.channel, nickname, options.irc_server, options.port)
     bot.start()
diff --git a/zulip/integrations/bridge_with_irc/irc_mirror_backend.py b/zulip/integrations/bridge_with_irc/irc_mirror_backend.py
index 8f9f2a4..a189054 100644
--- a/zulip/integrations/bridge_with_irc/irc_mirror_backend.py
+++ b/zulip/integrations/bridge_with_irc/irc_mirror_backend.py
@@ -11,11 +11,12 @@ def zulip_sender(sender_string):
     return nick + "@" + IRC_DOMAIN
 
 class IRCBot(irc.bot.SingleServerIRCBot):
-    def __init__(self, zulip_client, channel, nickname, server, port=6667):
-        # type: (Any, irc.bot.Channel, str, str, int) -> None
+    def __init__(self, zulip_client, stream, channel, nickname, server, port=6667):
+        # type: (Any, str, irc.bot.Channel, str, str, int) -> None
         irc.bot.SingleServerIRCBot.__init__(self, [(server, port)], nickname, nickname)
         self.channel = channel  # type: irc.bot.Channel
         self.zulip_client = zulip_client
+        self.stream = stream
 
     def on_nicknameinuse(self, c, e):
         # type: (ServerConnection, Event) -> None
@@ -62,7 +63,7 @@ class IRCBot(irc.bot.SingleServerIRCBot):
     def on_pubmsg(self, c, e):
         # type: (ServerConnection, Event) -> None
         content = e.arguments[0]
-        stream = e.target
+        stream = self.stream
         sender = zulip_sender(e.source)
         if sender.endswith("_zulip@" + IRC_DOMAIN):
             return