diff --git a/docs/configuration.md b/docs/configuration.md
index e80ac214..2036744e 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -44,6 +44,7 @@ The `global` section contains the following fields:
 | `allow_room_creation` | `boolean` | Allow users to create rooms | `true` |
 | `allow_unstable_room_versions` | `boolean` | Allow users to create and join rooms with unstable versions | `true` |
 | `default_rooms` | `array` | The list of rooms that will be joined by default on registration | [] |
+| `default_rooms_join_reason` | `string` | The reason for joining the rooms | "Hello from Conduit!" |
 | `default_room_version` | `string` | The default room version (`"6"`-`"10"`)| `"10"` |
 | `allow_jaeger` | `boolean` | Allow Jaeger tracing | `false` |
 | `tracing_flame` | `boolean` | Enable flame tracing | `false` |
diff --git a/src/api/client_server/account.rs b/src/api/client_server/account.rs
index 6b0cb66a..b3f17a62 100644
--- a/src/api/client_server/account.rs
+++ b/src/api/client_server/account.rs
@@ -301,7 +301,15 @@ pub async fn register_route(body: Ruma<register::v3::Request>) -> Result<registe
             if let Err(e) = join_room_by_id_helper(
                 Some(&user_id),
                 room_id,
-                Some("All men are equal before fish.".to_owned()),
+                Some(
+                    services()
+                        .globals
+                        .config
+                        .default_rooms_join_reason
+                        .as_deref()
+                        .unwrap_or("Hello from Conduit!")
+                        .to_owned(),
+                ),
                 &servers,
                 None,
             )
diff --git a/src/config/mod.rs b/src/config/mod.rs
index 7f2d7e86..d08756ca 100644
--- a/src/config/mod.rs
+++ b/src/config/mod.rs
@@ -57,10 +57,11 @@ pub struct Config {
     pub allow_room_creation: bool,
     #[serde(default = "true_fn")]
     pub allow_unstable_room_versions: bool,
-    #[serde(default = "default_default_room_version")]
-    pub default_room_version: RoomVersionId,
     #[serde(default = "Vec::new")]
     pub default_rooms: Vec<OwnedRoomOrAliasId>,
+    pub default_rooms_join_reason: Option<String>,
+    #[serde(default = "default_default_room_version")]
+    pub default_room_version: RoomVersionId,
     #[serde(default)]
     pub well_known: WellKnownConfig,
     #[serde(default = "false_fn")]