diff --git a/ext/gme/gstgme.c b/ext/gme/gstgme.c
index 5bfe361daf..f8a387d43c 100644
--- a/ext/gme/gstgme.c
+++ b/ext/gme/gstgme.c
@@ -375,7 +375,7 @@ gst_gme_play (GstPad * pad)
         gme_play (gme->player, NUM_SAMPLES * 2,
         (short *) GST_BUFFER_DATA (out));
     if (gme_err) {
-      GST_ELEMENT_ERROR (gme, STREAM, DEMUX, (NULL), (gme_err));
+      GST_ELEMENT_ERROR (gme, STREAM, DEMUX, (NULL), ("%s", gme_err));
       gst_pad_pause_task (pad);
       gst_pad_push_event (pad, gst_event_new_eos ());
       gst_object_unref (gme);
@@ -445,7 +445,7 @@ gme_setup (GstGmeDec * gme)
       gme->player = NULL;
     }
 
-    GST_ELEMENT_ERROR (gme, STREAM, DEMUX, (NULL), (gme_err));
+    GST_ELEMENT_ERROR (gme, STREAM, DEMUX, (NULL), ("%s", gme_err));
 
     return FALSE;
   }
diff --git a/ext/opus/gstopusparse.c b/ext/opus/gstopusparse.c
index f6e45ec9eb..472e7b083b 100644
--- a/ext/opus/gstopusparse.c
+++ b/ext/opus/gstopusparse.c
@@ -150,7 +150,8 @@ gst_opus_parse_check_valid_frame (GstBaseParse * base,
 
   data = GST_BUFFER_DATA (frame->buffer);
   size = GST_BUFFER_SIZE (frame->buffer);
-  GST_DEBUG_OBJECT (parse, "Checking for frame, %u bytes in buffer", size);
+  GST_DEBUG_OBJECT (parse,
+      "Checking for frame, %" G_GSIZE_FORMAT " bytes in buffer", size);
 
   /* check for headers */
   is_idheader = gst_opus_header_is_id_header (frame->buffer);