Index: uspace/lib/ipcgfx/src/server.c
===================================================================
--- uspace/lib/ipcgfx/src/server.c	(revision 48f7e476926b1d211bb3af389b6cd670f5c9218c)
+++ uspace/lib/ipcgfx/src/server.c	(revision 87a7cdb3ff40f9795359f6da489d45a3fafee668)
@@ -163,5 +163,6 @@
 	srvbmp->bmp = bitmap;
 	srvbmp->bmp_id = srvgc->next_bmp_id++;
-	printf("gc_bitmap_create_srv: storing bmp_id=%lu\n", srvbmp->bmp_id);
+	printf("gc_bitmap_create_srv: storing bmp_id=%u\n",
+	    (unsigned) srvbmp->bmp_id);
 
 	async_answer_1(icall, EOK, srvbmp->bmp_id);