diff --git a/sys/conf/kern.post.mk b/sys/conf/kern.post.mk
index 7b2a175543a2..371049380a02 100644
--- a/sys/conf/kern.post.mk
+++ b/sys/conf/kern.post.mk
@@ -1,4 +1,3 @@
-
 # Part of unified Makefile for building kenrels.  This includes all
 # the definitions that need to be included after all the % directives,
 # except %RULES and things that act like they are part of %RULES
@@ -43,7 +42,7 @@ ${SYSTEM_OBJS}: vnode_if.h ${BEFORE_DEPEND:M*.h} ${MFILES:T:S/.m$/.h/}
 
 .for mfile in ${MFILES}
 ${mfile:T:S/.m$/.h/}: ${mfile}
-	perl5 $S/kern/makeobjops.pl -h ${mfile}
+	${AWK} -f $S/tools/makeobjops.awk ${mfile} -h
 .endfor
 
 kernel-clean:
diff --git a/sys/conf/kern.pre.mk b/sys/conf/kern.pre.mk
index b64910eff7e3..6a034e86481f 100644
--- a/sys/conf/kern.pre.mk
+++ b/sys/conf/kern.pre.mk
@@ -73,7 +73,7 @@ NORMAL_S= ${CC} -c ${ASM_CFLAGS} ${WERROR} ${.IMPSRC}
 PROFILE_C= ${CC} -c ${CFLAGS} ${WERROR} ${.IMPSRC}
 NORMAL_C_NOWERROR= ${CC} -c ${CFLAGS} ${PROF} ${.IMPSRC}
 
-NORMAL_M= perl5 $S/kern/makeobjops.pl -c $<; \
+NORMAL_M= ${AWK} -f $S/tools/makeobjops.awk $< -c ; \
 	  ${CC} -c ${CFLAGS} ${PROF} ${.PREFIX}.c
 
 GEN_CFILES= $S/$M/$M/genassym.c
diff --git a/sys/conf/kmod.mk b/sys/conf/kmod.mk
index 8634516f372f..59f5ca763bbb 100644
--- a/sys/conf/kmod.mk
+++ b/sys/conf/kmod.mk
@@ -312,9 +312,9 @@ CLEANFILES+=	${_src}
 ${_src}: @
 .endif
 .if exists(@)
-${_src}: @/kern/makeobjops.pl @/${_srcsrc}
+${_src}: @/tools/makeobjops.awk @/${_srcsrc}
 .endif
-	perl @/kern/makeobjops.pl -${_ext} @/${_srcsrc}
+	${AWK} -f @/tools/makeobjops.awk @/${_srcsrc} -${_ext}
 .endif
 .endfor # _src
 .endfor # _ext