diff --git a/gnu/usr.bin/groff/src/preproc/soelim/Makefile b/gnu/usr.bin/groff/src/preproc/soelim/Makefile
index 662a67887880..443d066a4ac7 100644
--- a/gnu/usr.bin/groff/src/preproc/soelim/Makefile
+++ b/gnu/usr.bin/groff/src/preproc/soelim/Makefile
@@ -1,9 +1,8 @@
 # $FreeBSD$
 
-PROG=		soelim
-SRCS=		soelim.cc
+PROG_CXX=	soelim
 DPADD=		${LIBGROFF}
 LDADD=		${LIBGROFF}
 CLEANFILES=	${MAN}
 
 .include <bsd.prog.mk>