diff --git a/zulip/integrations/bridge_between_zulips/README.md b/zulip/integrations/bridge_between_zulips/README.md
index 31f52a9..00d4d78 100644
--- a/zulip/integrations/bridge_between_zulips/README.md
+++ b/zulip/integrations/bridge_between_zulips/README.md
@@ -3,18 +3,18 @@
 Let `realm_1` be the first realm, `realm_2` be the second realm.  Let `bot_1` be
 the relay bot in `realm_1`, `bot_2` be the relay bot in `realm_2`.
 
-This bot relays each message received at a specified subject in a specified
-stream from `realm_1` to a specified subject in a specified stream in `realm_2`.
+This bot relays each message received at a specified topic in a specified
+stream from `realm_1` to a specified topic in a specified stream in `realm_2`.
 
 Steps to create an inter-realm bridge:
 1. Register a generic bot (`bot_1`) in `realm_1`
 2. Enter the api info of `bot_1` into the config file (interrealm_bridge_config.py)
-3. Create a stream in `realm_1` (`stream_1`) and a subject for the bridge
+3. Create a stream in `realm_1` (`stream_1`) and a topic for the bridge
 4. Make sure `bot_1` is subscribed to `stream_1`
-5. Enter the stream and the subject into the config file.
+5. Enter the stream and the topic 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.
+the mirroring granularity becomes stream-wide. Instead of one topic, all
+topics 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 8057cfd..f876507 100755
--- a/zulip/integrations/bridge_between_zulips/run-interrealm-bridge
+++ b/zulip/integrations/bridge_between_zulips/run-interrealm-bridge
@@ -60,12 +60,12 @@ def create_pipe_event(to_client: zulip.Client, from_bot: Dict[str, Any],
 if __name__ == "__main__":
     usage = """run-interrealm-bridge [--stream]
 
-    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.
+    Relay each message received at a specified topic in a specified stream from
+    the first realm to a specified topic in a specified stream in the second realm.
 
     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
+    granularity becomes stream-wide. Instead of one topic,
+    all topics within the stream are mirrored as-is without
     translation.
     """
     sys.path.append(os.path.join(os.path.dirname(__file__), '..'))