diff --git a/web/app.js b/web/app.js
index 49c0e57..6e19df9 100644
--- a/web/app.js
+++ b/web/app.js
@@ -196,6 +196,7 @@
         }
       };
       source.connect(worklet);
+      worklet.port.postMessage({ command: "start" });
       // Don't connect worklet to destination (no playback)
       state.workletNode = worklet;
       state.recording = true;