diff --git a/share/mk/bsd.doc.mk b/share/mk/bsd.doc.mk
index c89c09d1c4aa..e82d98bc4327 100644
--- a/share/mk/bsd.doc.mk
+++ b/share/mk/bsd.doc.mk
@@ -136,11 +136,11 @@ realinstall:
 .if ${PRINTERDEVICE:Mhtml}
 	cd ${SRCDIR}; \
 	    ${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
-	    ${DOC}*.html ${DESTDIR}${BINDIR}/${VOLUME}
+	    ${DOC}*.html ${DESTDIR}${BINDIR}/${VOLUME}/
 .endif
 .for _dev in ${PRINTERDEVICE:Nhtml}
 	${INSTALL} -o ${BINOWN} -g ${BINGRP} -m ${BINMODE} \
-	    ${DFILE.${_dev}} ${DESTDIR}${BINDIR}/${VOLUME}
+	    ${DFILE.${_dev}} ${DESTDIR}${BINDIR}/${VOLUME}/
 .endfor
 
 spell: ${SRCS}