diff --git a/src/node/hooks/express/socketio.js b/src/node/hooks/express/socketio.js
index a44e74e3a..178cf9155 100644
--- a/src/node/hooks/express/socketio.js
+++ b/src/node/hooks/express/socketio.js
@@ -56,7 +56,7 @@ exports.expressCreateServer = (hookName, args, cb) => {
      *   https://github.com/socketio/socket.io/issues/2276#issuecomment-147184662 (not totally true, actually, see above)
      */
     cookie: false,
-    maxHttpBufferSize: 10E3,
+    maxHttpBufferSize: 1 << 20, // 1MiB
   });
 
   io.use((socket, next) => {