diff --git a/Build.sh b/Build.sh
index 9fc422f..bba15e7 100644
--- a/Build.sh
+++ b/Build.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-# $MirOS: src/bin/mksh/Build.sh,v 1.132 2007/01/17 23:18:55 tg Exp $
+# $MirOS: src/bin/mksh/Build.sh,v 1.133 2007/01/17 23:27:47 tg Exp $
 #-
 # Env: CC, CFLAGS, CPP, CPPFLAGS, LDFLAGS, LIBS, NOWARN, NROFF, TARGET_OS
 # CPPFLAGS recognised: MKSH_SMALL MKSH_NOPWNAM
@@ -387,6 +387,11 @@ ac_test langinfo_codeset setlocale_ctype 0 'nl_langinfo(CODESET)' <<-'EOF'
 	int main(void) { return ((ptrdiff_t)(void *)nl_langinfo(CODESET)); }
 EOF
 
+ac_test revoke <<-'EOF'
+	#include <unistd.h>
+	int main(int ac, char *av[]) { return (ac + revoke(av[0])); }
+EOF
+
 ac_test setmode mksh_full 1 <<-'EOF'
 	#if defined(__MSVCRT__) || defined(__CYGWIN__)
 	#error Win32 setmode() is different from what we need
diff --git a/Makefile b/Makefile
index bf94c60..160f808 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-# $MirOS: src/bin/mksh/Makefile,v 1.25 2007/01/17 23:18:55 tg Exp $
+# $MirOS: src/bin/mksh/Makefile,v 1.26 2007/01/17 23:27:47 tg Exp $
 
 PROG=		mksh
 SRCS=		alloc.c edit.c eval.c exec.c expr.c funcs.c histrap.c \
@@ -8,9 +8,9 @@ CPPFLAGS+=	-DHAVE_SYS_PARAM_H -DHAVE_SYS_SYSMACROS_H=0 -DHAVE_LIBGEN_H
 CPPFLAGS+=	-DHAVE_STDBOOL_H -DHAVE_RLIM_T
 CPPFLAGS+=	-DHAVE_SYS_SIGNAME -DHAVE_SYS_SIGLIST
 CPPFLAGS+=	-DHAVE_ARC4RANDOM -DHAVE_ARC4RANDOM_PUSH -DHAVE_SETLOCALE_CTYPE
-CPPFLAGS+=	-DHAVE_LANGINFO_CODESET -DHAVE_SETMODE -DHAVE_SETRESUGID
-CPPFLAGS+=	-DHAVE_SETGROUPS -DHAVE_STRCASESTR -DHAVE_STRLCPY
-CPPFLAGS+=	-DHAVE_MULTI_IDSTRING
+CPPFLAGS+=	-DHAVE_LANGINFO_CODESET -DHAVE_REVOKE -DHAVE_SETMODE
+CPPFLAGS+=	-DHAVE_SETRESUGID -DHAVE_SETGROUPS -DHAVE_STRCASESTR
+CPPFLAGS+=	-DHAVE_STRLCPY -DHAVE_MULTI_IDSTRING
 CDIAGFLAGS+=	-Wno-cast-qual
 
 LINKS+=		${BINDIR}/${PROG} ${BINDIR}/sh
diff --git a/misc.c b/misc.c
index 8650a98..2879ad0 100644
--- a/misc.c
+++ b/misc.c
@@ -6,7 +6,7 @@
 #include <grp.h>
 #endif
 
-__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.44 2006/11/19 20:43:13 tg Exp $\t"
+__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.45 2007/01/17 23:27:47 tg Exp $\t"
 	MKSH_SH_H_ID);
 
 #undef USE_CHVT
@@ -1340,7 +1340,7 @@ parse_T(char *fn)
 		warningf(false, "chvt: cannot chown root %s", fn);
 	if (((sb.st_mode & 07777) != 0600) && chmod(fn, 0600))
 		warningf(false, "chvt: cannot chmod 0600 %s", fn);
-#if !defined(__sun__) && !defined(__gnu_linux__) && !defined(__INTERIX)
+#if !HAVE_REVOKE
 	if (revoke(fn))
 		warningf(false, "chvt: cannot revoke %s", fn);
 #endif