diff --git a/gst/rtpmanager/rtpjitterbuffer.c b/gst/rtpmanager/rtpjitterbuffer.c
index 3a2423e94f..c8562a48d7 100644
--- a/gst/rtpmanager/rtpjitterbuffer.c
+++ b/gst/rtpmanager/rtpjitterbuffer.c
@@ -695,7 +695,7 @@ rtp_jitter_buffer_insert (RTPJitterBuffer * jbuf, GstBuffer * buf,
   /* buffering mode, update buffer stats */
   if (jbuf->mode == RTP_JITTER_BUFFER_MODE_BUFFER)
     update_buffer_level (jbuf, percent);
-  else
+  else if (percent)
     *percent = -1;
 
   /* tail was changed when we did not find a previous packet, we set the return
@@ -739,7 +739,7 @@ rtp_jitter_buffer_pop (RTPJitterBuffer * jbuf, gint * percent)
   /* buffering mode, update buffer stats */
   if (jbuf->mode == RTP_JITTER_BUFFER_MODE_BUFFER)
     update_buffer_level (jbuf, percent);
-  else
+  else if (percent)
     *percent = -1;
 
   return buf;