diff --git a/sys/boot/Makefile b/sys/boot/Makefile
index f0cf5ff1bc42..4711995f8373 100644
--- a/sys/boot/Makefile
+++ b/sys/boot/Makefile
@@ -3,6 +3,11 @@
 # Build the add-in FORTH interpreter
 SUBDIR+=		ficl
 
+# Build OpenFirmware library on PowerPC
+.if ${MACHINE_ARCH} == "powerpc"
+SUBDIR+=		ofw
+.endif
+
 # Pick the machine-dependant subdir based on the target architecture.
 # XXX pc98 is basicly a special i386 with MACHINE_ARCH=i386 and MACHINE=pc98.
 .if ${MACHINE_ARCH} == "i386" && ${MACHINE} == "pc98"