diff --git a/ChangeLog b/ChangeLog
index fe0eb615c0..c89ff9fa9e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2007-01-25  Edward Hervey  <edward@fluendo.com>
+
+	* gst/multipart/multipartmux.c: (gst_multipart_mux_collected):
+	* sys/ximage/ximageutil.c: (ximageutil_check_xshm_calls):
+	Use G_GSIZE_FORMAT in print statements for portability.
+	Fixes build on macosx.
+
 2007-01-24  Wim Taymans  <wim@fluendo.com>
 
 	* gst/rtp/Makefile.am:
diff --git a/gst/multipart/multipartmux.c b/gst/multipart/multipartmux.c
index bd98dd8bf0..e87d42aa36 100644
--- a/gst/multipart/multipartmux.c
+++ b/gst/multipart/multipartmux.c
@@ -494,7 +494,8 @@ gst_multipart_mux_collected (GstCollectPads * pads, GstMultipartMux * mux)
   GST_BUFFER_OFFSET (headerbuf) = mux->offset;
   mux->offset += headerlen;
 
-  GST_DEBUG_OBJECT (mux, "pushing %u bytes header buffer", headerlen);
+  GST_DEBUG_OBJECT (mux, "pushing %" G_GSIZE_FORMAT " bytes header buffer",
+      headerlen);
   ret = gst_pad_push (mux->srcpad, headerbuf);
   if (ret != GST_FLOW_OK)
     /* push always takes ownership of the buffer, even after an error, so we
@@ -552,7 +553,8 @@ no_caps:
   }
 alloc_failed:
   {
-    GST_WARNING_OBJECT (mux, "failed allocating a %d bytes buffer", headerlen);
+    GST_WARNING_OBJECT (mux,
+        "failed allocating a %" G_GSIZE_FORMAT " bytes buffer", headerlen);
     g_free (header);
     goto beach;
   }
diff --git a/sys/ximage/ximageutil.c b/sys/ximage/ximageutil.c
index 8e36bb68d2..d340ac99c0 100644
--- a/sys/ximage/ximageutil.c
+++ b/sys/ximage/ximageutil.c
@@ -78,7 +78,8 @@ ximageutil_check_xshm_calls (GstXContext * xcontext)
 
   SHMInfo.shmid = shmget (IPC_PRIVATE, size, IPC_CREAT | 0777);
   if (SHMInfo.shmid == -1) {
-    GST_WARNING ("could not get shared memory of %d bytes", size);
+    GST_WARNING ("could not get shared memory of %" G_GSIZE_FORMAT " bytes",
+        size);
     goto beach;
   }