diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index dc06202b648..3158f5f8567 100644
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,7 @@
+2014-12-22  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* dwarf.c (read_cie): Cast size to long to warn.
+
 2014-12-22  Nick Clifton  <nickc@redhat.com>
 
 	PR binutils/17531
diff --git a/binutils/dwarf.c b/binutils/dwarf.c
index 56f27ecd474..e4efd06581e 100644
--- a/binutils/dwarf.c
+++ b/binutils/dwarf.c
@@ -5539,7 +5539,7 @@ read_cie (unsigned char *start, unsigned char *end,
       if (q < qend)
 	{
 	  warn (_("Not enough augmentation data (%lx bytes still needed)\n"),
-		(augmentation_data + augmentation_data_len) - q);
+		(long) ((augmentation_data + augmentation_data_len) - q));
 	  augmentation_data_len = q - augmentation_data;
 	}
     }