diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index af3fe446a75..c85bd07e7f5 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,8 @@
+2014-12-24  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* pei-x86_64.c (pex64_bfd_print_pdata_section): Add cast to
+	unsigned long.
+
 2014-12-24  Pierre Muller  <muller@sourceware.org>
 
 	Add support for pdata output for pe coff objects.
diff --git a/bfd/pei-x86_64.c b/bfd/pei-x86_64.c
index 16d88997e46..51bf39046cb 100644
--- a/bfd/pei-x86_64.c
+++ b/bfd/pei-x86_64.c
@@ -509,7 +509,8 @@ pex64_bfd_print_pdata_section (bfd *abfd, void *vfile, asection *pdata_section)
       {
 	fprintf (file,
 		 _("Warning: %s section size (%ld) is smaller than virtual size (%ld)\n"),
-		 pdata_section->name, datasize, stop);
+		 pdata_section->name, (unsigned long) datasize,
+		 (unsigned long) stop);
 	/* Be sure not to read passed datasize.  */
 	stop = datasize / onaline;
       }