diff --git a/Makefile.inc1 b/Makefile.inc1
index c15a2bad7bd5..f1a1e8641349 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -15,7 +15,7 @@
 #	-DNO_PORTSUPDATE do not update ports in ${MAKE} update
 #	-DNO_ROOT install without using root privilege
 #	-DNO_DOCUPDATE do not update doc in ${MAKE} update
-#	-DNO_CTF do not run the DTrace CTF conversion tools on built objects
+#	-DWITHOUT_CTF do not run the DTrace CTF conversion tools on built objects
 #	LOCAL_DIRS="list of dirs" to add additional dirs to the SUBDIR list
 #	LOCAL_LIB_DIRS="list of dirs" to add additional dirs to libraries target
 #	LOCAL_MTREE="list of mtree files" to process to allow local directories
@@ -248,7 +248,7 @@ BMAKE=		MAKEOBJDIRPREFIX=${WORLDTMP} \
 		SSP_CFLAGS= \
 		MK_HTML=no MK_INFO=no NO_LINT=yes MK_MAN=no \
 		-DNO_PIC -DNO_PROFILE -DNO_SHARED \
-		-DNO_CPU_CFLAGS -DNO_WARNS -DNO_CTF -DEARLY_BUILD MK_TESTS=no
+		-DNO_CPU_CFLAGS -DNO_WARNS MK_CTF=no -DEARLY_BUILD MK_TESTS=no
 
 # build-tools stage
 TMAKE=		MAKEOBJDIRPREFIX=${OBJTREE} \
@@ -258,7 +258,7 @@ TMAKE=		MAKEOBJDIRPREFIX=${OBJTREE} \
 		BOOTSTRAPPING=${OSRELDATE} \
 		SSP_CFLAGS= \
 		-DNO_LINT \
-		-DNO_CPU_CFLAGS -DNO_WARNS -DNO_CTF -DEARLY_BUILD MK_TESTS=no
+		-DNO_CPU_CFLAGS -DNO_WARNS MK_CTF=no -DEARLY_BUILD MK_TESTS=no
 
 # cross-tools stage
 XMAKE=		TOOLS_PREFIX=${WORLDTMP} ${BMAKE} \
@@ -277,7 +277,7 @@ KTMAKE=		TOOLS_PREFIX=${WORLDTMP} MAKEOBJDIRPREFIX=${WORLDTMP} \
 		SSP_CFLAGS= \
 		MK_HTML=no MK_INFO=no -DNO_LINT MK_MAN=no \
 		-DNO_PIC -DNO_PROFILE -DNO_SHARED \
-		-DNO_CPU_CFLAGS -DNO_WARNS -DNO_CTF -DEARLY_BUILD
+		-DNO_CPU_CFLAGS -DNO_WARNS MK_CTF=no -DEARLY_BUILD
 
 # world stage
 WMAKEENV=	${CROSSENV} \
@@ -294,7 +294,7 @@ HMAKE+=		PATH=${TMPPATH} METALOG=${METALOG} -DNO_ROOT
 .endif
 
 .if ${MK_CDDL} == "no"
-WMAKEENV+=	NO_CTF=1
+WMAKEENV+=	MK_CTF=no
 .endif
 
 .if defined(CROSS_TOOLCHAIN_PREFIX)
@@ -400,7 +400,7 @@ LIB32WMAKEFLAGS+= CC="${XCC} ${LIB32FLAGS}" \
 		-DCOMPAT_32BIT \
 		-DLIBRARIES_ONLY \
 		-DNO_CPU_CFLAGS \
-		-DNO_CTF \
+		MK_CTF=no \
 		-DNO_LINT \
 		MK_TESTS=no
 
@@ -609,7 +609,7 @@ build32:
 	    WORLDTMP=${WORLDTMP} \
 	    MAKEFLAGS="-m ${.CURDIR}/tools/build/mk ${.MAKEFLAGS}" \
 	    MAKEOBJDIRPREFIX=${OBJTREE}/lib32 ${MAKE} SSP_CFLAGS= DESTDIR= \
-	    DIRPRFX=${_dir}/ -DNO_LINT -DNO_CPU_CFLAGS -DNO_WARNS -DNO_CTF \
+	    DIRPRFX=${_dir}/ -DNO_LINT -DNO_CPU_CFLAGS -DNO_WARNS MK_CTF=no \
 	    -DEARLY_BUILD build-tools
 .endfor
 	cd ${.CURDIR}; \
diff --git a/tools/regression/filemon/Makefile b/tools/regression/filemon/Makefile
index 027f13179a80..6ee88f44505d 100644
--- a/tools/regression/filemon/Makefile
+++ b/tools/regression/filemon/Makefile
@@ -22,9 +22,8 @@ MAN=
 WARNS?=	6
 CFLAGS+= -I${.CURDIR}/../../../sys
 
-# Should be "WITHOUT_CTF=" below, but stupid infastrurture fails:
-# "/usr/share/mk/bsd.own.mk", line 489: WITH_CTF and WITHOUT_CTF can't both be set.
-WITHOUT_CDDL=
+# We don't want to genreate CTF files. Force that here.
+MK_CTF=no
 
 CLEANFILES+=	${BINS}
 
@@ -59,7 +58,7 @@ test01: ${BINS:Mfilemontest*} ${BINS:Msizeof_long*} clean-test
 	    grep -q -v '\.[0-9][0-9][0-9][0-9][0-9][0-9]$$' || printf "Time stamp format OK\n\n"
 .endfor
 	@cd ${.CURDIR} ; set +e ; for F in filemon_log.* ; do \
- 	    tail -1 $$F | grep -q '# Bye bye' || echo "$$F missing filemon bye-bye" ; \
+	    tail -1 $$F | grep -q '# Bye bye' || echo "$$F missing filemon bye-bye" ; \
 	    NL=`wc -l $$F | awk '{print $$1}'` ; \
 	    if [ "$${NL}" != 97 ]; then echo "$$F BAD, contains $${NL} lines" ; exit 1 ; fi ; done