diff --git a/src/node/server.js b/src/node/server.js
index 8047a04..3604082 100644
--- a/src/node/server.js
+++ b/src/node/server.js
@@ -51,6 +51,7 @@ function initApp({ username, password, baseURL, getInitialState, onMessage }) {
             data = JSON.parse(dataText)
           } catch (err) {
             console.warn('received unexpected ws data:', dataText)
+            return
           }
 
           try {