diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4a5491f9..981e3b80 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@ and this project adheres to
 - 🔨(frontend) encapsulated title to its own component #474
 - 🐛(frontend) Fix hidden menu on Firefox #468
 - ⚡️(backend) optimize number of queries on document list view #411
+- 🚚(collaboration) change the websocket key name #480
 
 
 ## [1.8.2] - 2024-11-28
diff --git a/env.d/development/common.dist b/env.d/development/common.dist
index a52e45ad..6833f09b 100644
--- a/env.d/development/common.dist
+++ b/env.d/development/common.dist
@@ -53,7 +53,7 @@ AI_API_KEY=password
 AI_MODEL=llama
 
 # Collaboration
-COLLABORATION_SERVER_URL=ws://localhost:4444
+COLLABORATION_WS_URL=ws://localhost:4444
 
 # Frontend
 FRONTEND_THEME=dsfr
diff --git a/src/backend/core/api/viewsets.py b/src/backend/core/api/viewsets.py
index 75c0f5c4..7b63a7f3 100644
--- a/src/backend/core/api/viewsets.py
+++ b/src/backend/core/api/viewsets.py
@@ -1002,7 +1002,7 @@ class ConfigView(views.APIView):
             Return a dictionary of public settings.
         """
         array_settings = [
-            "COLLABORATION_SERVER_URL",
+            "COLLABORATION_WS_URL",
             "CRISP_WEBSITE_ID",
             "ENVIRONMENT",
             "FRONTEND_THEME",
diff --git a/src/backend/core/tests/test_api_config.py b/src/backend/core/tests/test_api_config.py
index 96888be5..a5eb151f 100644
--- a/src/backend/core/tests/test_api_config.py
+++ b/src/backend/core/tests/test_api_config.py
@@ -16,7 +16,7 @@ pytestmark = pytest.mark.django_db
 
 
 @override_settings(
-    COLLABORATION_SERVER_URL="http://testcollab/",
+    COLLABORATION_WS_URL="http://testcollab/",
     CRISP_WEBSITE_ID="123",
     FRONTEND_THEME="test-theme",
     MEDIA_BASE_URL="http://testserver/",
@@ -34,7 +34,7 @@ def test_api_config(is_authenticated):
     response = client.get("/api/v1.0/config/")
     assert response.status_code == HTTP_200_OK
     assert response.json() == {
-        "COLLABORATION_SERVER_URL": "http://testcollab/",
+        "COLLABORATION_WS_URL": "http://testcollab/",
         "CRISP_WEBSITE_ID": "123",
         "ENVIRONMENT": "test",
         "FRONTEND_THEME": "test-theme",
diff --git a/src/backend/impress/settings.py b/src/backend/impress/settings.py
index 3bb1d830..50140620 100755
--- a/src/backend/impress/settings.py
+++ b/src/backend/impress/settings.py
@@ -372,8 +372,8 @@ class Base(Configuration):
     SENTRY_DSN = values.Value(None, environ_name="SENTRY_DSN", environ_prefix=None)
 
     # Collaboration
-    COLLABORATION_SERVER_URL = values.Value(
-        None, environ_name="COLLABORATION_SERVER_URL", environ_prefix=None
+    COLLABORATION_WS_URL = values.Value(
+        None, environ_name="COLLABORATION_WS_URL", environ_prefix=None
     )
 
     # Frontend
diff --git a/src/frontend/apps/e2e/__tests__/app-impress/config.spec.ts b/src/frontend/apps/e2e/__tests__/app-impress/config.spec.ts
index e005ca3a..1d8604df 100644
--- a/src/frontend/apps/e2e/__tests__/app-impress/config.spec.ts
+++ b/src/frontend/apps/e2e/__tests__/app-impress/config.spec.ts
@@ -6,7 +6,7 @@ import { createDoc } from './common';
 
 const config = {
   CRISP_WEBSITE_ID: null,
-  COLLABORATION_SERVER_URL: 'ws://localhost:4444',
+  COLLABORATION_WS_URL: 'ws://localhost:4444',
   ENVIRONMENT: 'development',
   FRONTEND_THEME: 'dsfr',
   MEDIA_BASE_URL: 'http://localhost:8083',
diff --git a/src/frontend/apps/impress/src/core/config/api/useConfig.tsx b/src/frontend/apps/impress/src/core/config/api/useConfig.tsx
index 04bb06c6..5cb6d3a9 100644
--- a/src/frontend/apps/impress/src/core/config/api/useConfig.tsx
+++ b/src/frontend/apps/impress/src/core/config/api/useConfig.tsx
@@ -7,7 +7,7 @@ interface ConfigResponse {
   LANGUAGES: [string, string][];
   LANGUAGE_CODE: string;
   ENVIRONMENT: string;
-  COLLABORATION_SERVER_URL?: string;
+  COLLABORATION_WS_URL?: string;
   CRISP_WEBSITE_ID?: string;
   FRONTEND_THEME?: Theme;
   MEDIA_BASE_URL?: string;
diff --git a/src/frontend/apps/impress/src/core/config/hooks/useCollaborationUrl.tsx b/src/frontend/apps/impress/src/core/config/hooks/useCollaborationUrl.tsx
index d945cb23..b0668372 100644
--- a/src/frontend/apps/impress/src/core/config/hooks/useCollaborationUrl.tsx
+++ b/src/frontend/apps/impress/src/core/config/hooks/useCollaborationUrl.tsx
@@ -8,8 +8,10 @@ export const useCollaborationUrl = (room?: string) => {
   }
 
   const base =
-    conf?.COLLABORATION_SERVER_URL ||
-    (typeof window !== 'undefined' ? `wss://${window.location.host}/ws` : '');
+    conf?.COLLABORATION_WS_URL ||
+    (typeof window !== 'undefined'
+      ? `wss://${window.location.host}/collaboration/ws/`
+      : '');
 
-  return `${base}/${room}`;
+  return `${base}?room=${room}`;
 };