diff --git a/src/main/kotlin/net/eksb/obsdc/Obs.kt b/src/main/kotlin/net/eksb/obsdc/Obs.kt
index 95788aa..73a9159 100644
--- a/src/main/kotlin/net/eksb/obsdc/Obs.kt
+++ b/src/main/kotlin/net/eksb/obsdc/Obs.kt
@@ -92,6 +92,12 @@ class Obs(private val q:BlockingQueue<Op>): AutoCloseable {
 	private fun onReady() {
 		log.info("ready")
 		ready.set(true)
+		// The docs say that you are only supposed to send requests from the [onReady] handler,
+		// but you cannot block the [onReady] handler.
+		// (If you block the [onReady] handler other handlers are not called. [onDisconnect] is not called so you
+		// cannot reconnect if OBS is restarted.)
+		// This would be fine if `onReady` was called after each response, but it is not.
+		// So we keep track of if it is ready, and make requests from another thread ([opThread]).
 	}
 
 	private val opThread = thread(name="obs-op", isDaemon=false, start=true) {