diff --git a/cwsidetone.cpp b/cwsidetone.cpp
index 9cdb4d9..0bfecd4 100644
--- a/cwsidetone.cpp
+++ b/cwsidetone.cpp
@@ -302,6 +302,7 @@ void cwSidetone::setLevel(int level) {
 void cwSidetone::stopSending() {
     QMutexLocker locker(&mutex);
     buffer.clear();
+    emit finished();
 }