diff --git a/sys/sys/resource.h b/sys/sys/resource.h
index 398acea6660b..432667ac58c1 100644
--- a/sys/sys/resource.h
+++ b/sys/sys/resource.h
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)resource.h	8.2 (Berkeley) 1/4/94
- * $Id$
+ * $Id: resource.h,v 1.2 1994/08/02 07:53:28 davidg Exp $
  */
 
 #ifndef _SYS_RESOURCE_H_
@@ -90,6 +90,8 @@ struct	rusage {
 
 #define	RLIM_NLIMITS	9		/* number of resource limits */
 
+#include <sys/types.h>			/* XXX for quad_t */
+
 #define	RLIM_INFINITY	(((u_quad_t)1 << 63) - 1)
 
 struct orlimit {