diff --git a/app-unimrcp/app_mrcpsynth.c b/app-unimrcp/app_mrcpsynth.c
index be9dc13..88220ad 100644
--- a/app-unimrcp/app_mrcpsynth.c
+++ b/app-unimrcp/app_mrcpsynth.c
@@ -660,6 +660,8 @@ static int app_synth_exec(struct ast_channel *chan, ast_app_data data)
 	}
 	while (running);
 
+	speech_channel_stop(mrcpsynth_session.schannel);
+
 	return mrcpsynth_exit(chan, &mrcpsynth_session, status);
 }