diff --git a/src/modules/rtp/rtsp_client.c b/src/modules/rtp/rtsp_client.c
index ba657f74a..915c1072e 100644
--- a/src/modules/rtp/rtsp_client.c
+++ b/src/modules/rtp/rtsp_client.c
@@ -456,6 +456,8 @@ static int rtsp_exec(pa_rtsp_client* c, const char* cmd,
     l = pa_iochannel_write(c->io, hdrs, strlen(hdrs));
     pa_xfree(hdrs);
 
+    /* FIXME: this is broken, not necessarily all bytes are written */
+
     return 0;
 }