diff --git a/mk/sys.mk b/mk/sys.mk
index 3619003b..c19aa783 100644
--- a/mk/sys.mk
+++ b/mk/sys.mk
@@ -32,7 +32,8 @@ LIBDIR?=		${UPREFIX}/${LIBNAME}
 LIBMODE?=		0444
 SHLIBDIR?=		${PREFIX}/${LIBNAME}
 
-MANDIR?=		${UPREFIX}/share/man/man
+MANPREFIX?=		${UPREFIX}/share
+MANDIR?=		${MANPREIX}/man
 MANMODE?=		0444
 
 DOCDIR?=		${UPREFIX}/share/doc