diff --git a/lib/index.js b/lib/index.js
index 4c66b66..986fa0d 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -53,7 +53,8 @@ function noQsMethod(options) {
           if (server.$emit) {
             server.$emit('authenticated', socket);
           } else {
-            server.server.sockets.emit('authenticated', socket);
+            // explicit namespace
+            server.server.nsps[socket.nsp.name].emit('authenticated', socket);
           }
         };