diff -up psmisc-22.6/configure.ac.types psmisc-22.6/configure.ac
--- psmisc-22.6/configure.ac.types	2008-04-07 12:21:50.000000000 +0200
+++ psmisc-22.6/configure.ac	2008-04-07 12:22:14.000000000 +0200
@@ -67,7 +67,8 @@ AC_CHECK_MEMBERS([struct user_regs_struc
 		struct user_regs_struct.rax,
 		struct user_regs_struct.rdi,
 		struct user_regs_struct.rsi,
-		struct user_regs_struct.rdx], [],[], [#include <sys/user.h>])
+		struct user_regs_struct.rdx], [],[], [#include <sys/types.h>
+			#include <sys/user.h>])
 AC_CHECK_MEMBERS([struct pt_regs.orig_gpr3,
 		struct pt_regs.gpr], [],[], [#include <linux/ptrace.h>])
 AM_CONDITIONAL(WANT_PEEKFD_I386,