diff --git a/share/mk/src.opts.mk b/share/mk/src.opts.mk
--- a/share/mk/src.opts.mk
+++ b/share/mk/src.opts.mk
@@ -131,6 +131,7 @@
     LLVM_COV \
     LLVM_CXXFILT \
     LOADER_GELI \
+    LOADER_KBOOT \
     LOADER_LUA \
     LOADER_OFW \
     LOADER_UBOOT \
@@ -311,6 +312,10 @@
 .if ${__T:Mpowerpc*} == ""
 BROKEN_OPTIONS+=LOADER_OFW
 .endif
+# KBOOT is only for powerpc64 (powerpc64le broken)
+.if ${__T} != "powerpc64"
+BROKEN_OPTIONS+=LOADER_KBOOT
+.endif
 # UBOOT is only for arm, and big-endian powerpc
 .if (${__T:Marm*} == "" && ${__T:Mpowerpc*} == "") || ${__T} == "powerpc64le"
 BROKEN_OPTIONS+=LOADER_UBOOT