--- /usr/ports/devel/tevent/Makefile.orig       2013-06-29 16:03:41.812964389 -0400
+++ /usr/ports/devel/tevent/Makefile    2013-06-29 16:04:07.598789009 -0400
@@ -44,7 +44,7 @@
 CONFIGURE_ENV+=                NOCOLOR=yes
 MAKE_ENV+=             NOCOLOR=yes
 
-CONFIGURE_ARGS+=       --mandir=${MANPREFIX}/man
+CONFIGURE_ARGS+=       --mandir=${MANPREFIX}/man --prefix=${PREFIX}
 
 BUILD_DEPENDS+=                talloc>=2.0.8:${PORTSDIR}/devel/talloc
 RUN_DEPENDS:=          ${BUILD_DEPENDS}