diff --git a/lib-src/hexl.c b/lib-src/hexl.c
index 9731321d4ae..053efbe0ccd 100644
--- a/lib-src/hexl.c
+++ b/lib-src/hexl.c
@@ -221,7 +221,7 @@ main (argc, argv)
 		  else
 		    {
 		      if (!i)
-			printf ("%08x: ", address);
+			printf ("%08lx: ", address);
 
 		      if (iso_flag)
 			string[i+1] =