diff --git a/include/Makefile b/include/Makefile
--- a/include/Makefile
+++ b/include/Makefile
@@ -358,29 +358,29 @@
 	    -name "*.h" -print -delete || true
 .for i in ${LDIRS} ${LSUBDIRS:Ndev/agp:Ndev/acpica:Ndev/evdev:Ndev/hid:Ndev/hyperv:Ndev/pci:Ndev/veriexec} ${LSUBSUBDIRS}
 	cd ${SRCTOP}/sys; \
-	${INSTALL} -C ${TAG_ARGS} -o ${BINOWN} -g ${BINGRP} -m 444 $i/*.h \
+	${INSTALL} -C ${TAG_ARGS:D${TAG_ARGS},dev} -o ${BINOWN} -g ${BINGRP} -m 444 $i/*.h \
 	    ${SDESTDIR}${INCLUDEDIR}/$i
 .endfor
 	cd ${SRCTOP}/sys/${MACHINE}/include; \
-	${INSTALL} -C ${TAG_ARGS} -o ${BINOWN} -g ${BINGRP} -m 444 *.h \
+	${INSTALL} -C ${TAG_ARGS:D${TAG_ARGS},dev} -o ${BINOWN} -g ${BINGRP} -m 444 *.h \
 	    ${SDESTDIR}${INCLUDEDIR}/machine
 .if exists(${SRCTOP}/sys/${MACHINE}/include/pc)
 	cd ${SRCTOP}/sys/${MACHINE}/include/pc; \
-	${INSTALL} -C ${TAG_ARGS} -o ${BINOWN} -g ${BINGRP} -m 444 *.h \
+	${INSTALL} -C ${TAG_ARGS:D${TAG_ARGS},dev} -o ${BINOWN} -g ${BINGRP} -m 444 *.h \
 	    ${SDESTDIR}${INCLUDEDIR}/machine/pc
 .endif
 .for _MARCH in ${_MARCHS}
 .if exists(${SRCTOP}/sys/${_MARCH}/include)
-	${INSTALL} -d ${TAG_ARGS} -o ${BINOWN} -g ${BINGRP} -m 755 \
+	${INSTALL} -d ${TAG_ARGS:D${TAG_ARGS},dev} -o ${BINOWN} -g ${BINGRP} -m 755 \
 	    ${SDESTDIR}${INCLUDEDIR}/${_MARCH}; \
 	cd ${SRCTOP}/sys/${_MARCH}/include; \
-	${INSTALL} -C ${TAG_ARGS} -o ${BINOWN} -g ${BINGRP} -m 444 *.h \
+	${INSTALL} -C ${TAG_ARGS:D${TAG_ARGS},dev} -o ${BINOWN} -g ${BINGRP} -m 444 *.h \
 	    ${SDESTDIR}${INCLUDEDIR}/${_MARCH}
 .if exists(${SRCTOP}/sys/${_MARCH}/include/pc)
-	${INSTALL} -d ${TAG_ARGS} -o ${BINOWN} -g ${BINGRP} -m 755 \
+	${INSTALL} -d ${TAG_ARGS:D${TAG_ARGS},dev} -o ${BINOWN} -g ${BINGRP} -m 755 \
 	    ${SDESTDIR}${INCLUDEDIR}/${_MARCH}/pc; \
 	cd ${SRCTOP}/sys/${_MARCH}/include/pc; \
-	${INSTALL} -C ${TAG_ARGS} -o ${BINOWN} -g ${BINGRP} -m 444 *.h \
+	${INSTALL} -C ${TAG_ARGS:D${TAG_ARGS},dev} -o ${BINOWN} -g ${BINGRP} -m 444 *.h \
 	    ${SDESTDIR}${INCLUDEDIR}/${_MARCH}/pc
 .endif
 .endif