diff --git a/sys/boot/powerpc/ps3/Makefile b/sys/boot/powerpc/ps3/Makefile
index 8c5b5e78199..3bb9cb329bf 100644
--- a/sys/boot/powerpc/ps3/Makefile
+++ b/sys/boot/powerpc/ps3/Makefile
@@ -110,6 +110,7 @@ loader.help: help.common help.ps3 ${.CURDIR}/../../fdt/help.fdt
 	cat ${.ALLSRC} | \
 	    awk -f ${.CURDIR}/../../common/merge_help.awk > ${.TARGET}
 
+.PATH: ${.CURDIR}/../../forth
 .include	"${.CURDIR}/../../forth/Makefile.inc"
 
 .if !exists(${DESTDIR}/boot/loader.rc)