diff --git a/gst-libs/gst/rtp/gstrtpbasedepayload.c b/gst-libs/gst/rtp/gstrtpbasedepayload.c
index b1e12d9c10..c2645fbf8f 100644
--- a/gst-libs/gst/rtp/gstrtpbasedepayload.c
+++ b/gst-libs/gst/rtp/gstrtpbasedepayload.c
@@ -1233,6 +1233,7 @@ read_rtp_header_extensions (GstRTPBaseDepayload * depayload,
       }
 
       if (ext) {
+        GST_OBJECT_LOCK (ext);
         if (!gst_rtp_header_extension_read (ext, ext_flags, &pdata[offset],
                 read_len, output)) {
           GST_WARNING_OBJECT (depayload, "RTP header extension (%s) could "
@@ -1246,6 +1247,7 @@ read_rtp_header_extensions (GstRTPBaseDepayload * depayload,
           needs_src_caps_update = TRUE;
         }
 
+        GST_OBJECT_UNLOCK (ext);
         gst_object_unref (ext);
       }
       GST_OBJECT_UNLOCK (depayload);