diff --git a/utils/Burg/zalloc.c b/utils/Burg/zalloc.c
index 9128e4280f2..526c52d85d3 100644
--- a/utils/Burg/zalloc.c
+++ b/utils/Burg/zalloc.c
@@ -2,12 +2,9 @@ char rcsid_zalloc[] = "$Id$";
 
 #include <stdio.h>
 #include <string.h>
+#include <stdlib.h>
 #include "b.h"
 
-extern void exit ARGS((int));
-extern void free ARGS((void *));
-extern void *malloc ARGS((unsigned));
-
 int
 fatal(const char *name, int line)
 {