diff --git a/Mk/bsd.port.mk b/Mk/bsd.port.mk
index b13d199e0c73..aa3e80a7b5d8 100644
--- a/Mk/bsd.port.mk
+++ b/Mk/bsd.port.mk
@@ -436,7 +436,10 @@ FreeBSD_MAINTAINER=	portmgr@FreeBSD.org
 #				  apply here.  It is recommended that you use
 #				  %%PREFIX%% for ${PREFIX}, %%LOCALBASE%% for
 #				  ${LOCALBASE} and %%X11BASE%% for ${X11BASE}.
-# DOCSDIR		- Name of the directory to install the packages docs in.
+# DOCSDIR		- Name of the directory to install the packages docs in
+#				  (default: ${PREFIX}/share/doc/${PORTNAME}).
+# DATADIR		- Name of the directory to install the packages shared data
+#				  in (default: ${PREFIX}/share/${PORTNAME}).
 # 
 # Note that the install target will automatically add manpages (see
 # above) and also substitute special sequences of characters (delimited
@@ -1374,6 +1377,7 @@ LDCONFIG_RUNLIST!=	${ECHO} ${LDCONFIG_PLIST} | ${SED} -e "s!%D!${PREFIX}!"
 .endif
 
 DOCSDIR?=	${PREFIX}/share/doc/${PORTNAME}
+DATADIR?=	${PREFIX}/share/${PORTNAME}
 
 .MAIN: all