diff --git a/zulip/integrations/bridge_between_zulips/README.md b/zulip/integrations/bridge_between_zulips/README.md
index 6b344d8..31f52a9 100644
--- a/zulip/integrations/bridge_between_zulips/README.md
+++ b/zulip/integrations/bridge_between_zulips/README.md
@@ -13,3 +13,8 @@ Steps to create an inter-realm bridge:
 4. Make sure `bot_1` is subscribed to `stream_1`
 5. Enter the stream and the subject into the config file.
 6. Do step 1-5 but for `bot_2` and with all occurrences of `_1` replaced with `_2`
+7. Run the script `run-interrealm-bridge`
+
+If the `--stream` flag is added (i.e. `run-interrealm-bridge --stream`), then
+the mirroring granularity becomes stream-wide. Instead of one subject, all
+subjects within the stream are mirrored as-is without translation.
diff --git a/zulip/integrations/bridge_between_zulips/run-interrealm-bridge b/zulip/integrations/bridge_between_zulips/run-interrealm-bridge
index 367e47d..8057cfd 100755
--- a/zulip/integrations/bridge_between_zulips/run-interrealm-bridge
+++ b/zulip/integrations/bridge_between_zulips/run-interrealm-bridge
@@ -63,8 +63,10 @@ if __name__ == "__main__":
     Relay each message received at a specified subject in a specified stream from
     the first realm to a specified subject in a specified stream in the second realm.
 
-    If the --stream flag is added, then the tunnel granularity becomes
-    stream-wide. All subjects are mirrored as-is without translation.
+    If the --stream flag is added, then the mirroring
+    granularity becomes stream-wide. Instead of one subject,
+    all subjects within the stream are mirrored as-is without
+    translation.
     """
     sys.path.append(os.path.join(os.path.dirname(__file__), '..'))