--- isdn4k-utils/capi20/capi20.h	2000-04-03 07:27:15.000000000 -0700
+++ isdn4k-utils/capi20/capi20.h.new	2008-02-02 01:15:33.000000000 -0800
@@ -21,6 +21,7 @@
 #define __CAPI20_H__
 
 #include <sys/time.h>
+#include <sys/types.h>
 
 #ifdef __cplusplus
 extern "C" {