diff --git a/peertube-plugin-hello-world/main.js b/peertube-plugin-hello-world/main.js
index 3b9e429..893deae 100644
--- a/peertube-plugin-hello-world/main.js
+++ b/peertube-plugin-hello-world/main.js
@@ -178,15 +178,18 @@ async function register ({
     }, 1000)
   })
 
-  registerWebSocketRoute({
-    route: '/toto',
+  // Backward compatibility
+  if (registerWebSocketRoute) {
+    registerWebSocketRoute({
+      route: '/toto',
 
-    handler: (request, socket, head) => {
-      wss.handleUpgrade(request, socket, head, ws => {
-        wss.emit('connection', ws, request)
-      })
-    }
-  })
+      handler: (request, socket, head) => {
+        wss.handleUpgrade(request, socket, head, ws => {
+          wss.emit('connection', ws, request)
+        })
+      }
+    })
+  }
 }
 
 async function unregister () {
diff --git a/peertube-plugin-hello-world/package-lock.json b/peertube-plugin-hello-world/package-lock.json
index ca1588d..93a6ff6 100644
--- a/peertube-plugin-hello-world/package-lock.json
+++ b/peertube-plugin-hello-world/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "peertube-plugin-hello-world",
-  "version": "0.0.21",
+  "version": "0.0.22",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "peertube-plugin-hello-world",
-      "version": "0.0.21",
+      "version": "0.0.22",
       "dependencies": {
         "ws": "^8.9.0"
       }
diff --git a/peertube-plugin-hello-world/package.json b/peertube-plugin-hello-world/package.json
index 4b62a8f..39fda4c 100644
--- a/peertube-plugin-hello-world/package.json
+++ b/peertube-plugin-hello-world/package.json
@@ -1,6 +1,6 @@
 {
   "name": "peertube-plugin-hello-world",
-  "version": "0.0.21",
+  "version": "0.0.22",
   "description": "Hello world PeerTube plugin example",
   "engine": {
     "peertube": ">=3.2.0"