diff --git a/lang/cem/cpp.ansi/Makefile b/lang/cem/cpp.ansi/Makefile
index 6572bb289..e25d41560 100644
--- a/lang/cem/cpp.ansi/Makefile
+++ b/lang/cem/cpp.ansi/Makefile
@@ -58,7 +58,7 @@ PRFILES = Makefile Parameters \
 GOBJ =	char.o symbol2str.o
 
 # generated source files
-GSRC =	char.c symbol2str.c
+GSRC =	char.c symbol2str.c next.c
 
 # .h files generated by `make.allod'
 STRSRC = macro.str replace.str
@@ -72,7 +72,7 @@ GHSRC =	errout.h idfsize.h ifdepth.h macbuf.h \
 
 # Other generated files, for 'make clean' only
 GENERATED = tokenfile.g Lpars.h LLfiles LL.output lint.out \
-	Xref hfiles cfiles next.c tags Makefile.old
+	Xref hfiles cfiles tags Makefile.old
 
 all:	cc