diff --git a/ext/libav/gstavauddec.c b/ext/libav/gstavauddec.c
index b837bbee0e..0b83e458be 100644
--- a/ext/libav/gstavauddec.c
+++ b/ext/libav/gstavauddec.c
@@ -679,8 +679,8 @@ gst_ffmpegauddec_handle_frame (GstAudioDecoder * decoder, GstBuffer * inbuf)
   oclass = (GstFFMpegAudDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
 
   GST_LOG_OBJECT (ffmpegdec,
-      "Received new data of size %u, offset:%" G_GUINT64_FORMAT ", ts:%"
-      GST_TIME_FORMAT ", dur:%" GST_TIME_FORMAT,
+      "Received new data of size %" G_GSIZE_FORMAT ", offset:%" G_GUINT64_FORMAT
+      ", ts:%" GST_TIME_FORMAT ", dur:%" GST_TIME_FORMAT,
       gst_buffer_get_size (inbuf), GST_BUFFER_OFFSET (inbuf),
       GST_TIME_ARGS (GST_BUFFER_PTS (inbuf)),
       GST_TIME_ARGS (GST_BUFFER_DURATION (inbuf)));
diff --git a/ext/libav/gstavviddec.c b/ext/libav/gstavviddec.c
index 9555fa7c6e..ce8d63e224 100644
--- a/ext/libav/gstavviddec.c
+++ b/ext/libav/gstavviddec.c
@@ -1283,10 +1283,9 @@ gst_ffmpegviddec_handle_frame (GstVideoDecoder * decoder,
   gboolean do_padding;
 
   GST_LOG_OBJECT (ffmpegdec,
-      "Received new data of size %u, dts %" GST_TIME_FORMAT ", pts:%"
-      GST_TIME_FORMAT ", dur:%" GST_TIME_FORMAT,
-      gst_buffer_get_size (frame->input_buffer),
-      GST_TIME_ARGS (frame->dts),
+      "Received new data of size %" G_GSIZE_FORMAT ", dts %" GST_TIME_FORMAT
+      ", pts:%" GST_TIME_FORMAT ", dur:%" GST_TIME_FORMAT,
+      gst_buffer_get_size (frame->input_buffer), GST_TIME_ARGS (frame->dts),
       GST_TIME_ARGS (frame->pts), GST_TIME_ARGS (frame->duration));
 
   if (!gst_buffer_map (frame->input_buffer, &minfo, GST_MAP_READ)) {