diff --git a/gst/dtmf/gstdtmfsrc.c b/gst/dtmf/gstdtmfsrc.c
index 9e3ea47a10..e5a8eef585 100644
--- a/gst/dtmf/gstdtmfsrc.c
+++ b/gst/dtmf/gstdtmfsrc.c
@@ -780,7 +780,7 @@ gst_dtmf_src_create (GstBaseSrc * basesrc, guint64 offset,
 
   buf = gst_dtmf_src_create_next_tone_packet (dtmfsrc, dtmfsrc->last_event);
 
-  GST_LOG_OBJECT (dtmfsrc, "Created buffer of size %d",
+  GST_LOG_OBJECT (dtmfsrc, "Created buffer of size %" G_GSIZE_FORMAT,
       gst_buffer_get_size (buf));
   *buffer = buf;