diff --git a/mach/proto/cg/fillem.c b/mach/proto/cg/fillem.c
index 074d4454a..c4bf21d8f 100644
--- a/mach/proto/cg/fillem.c
+++ b/mach/proto/cg/fillem.c
@@ -111,6 +111,12 @@ in_init(filename) char *filename; {
 		error("Bad format %s",filename);
 }
 
+in_start() {
+#ifdef modhead
+	fprintf(codefile,"%s",modhead) ;
+#endif
+}
+
 in_finish() {
 }
 
diff --git a/mach/proto/cg/main.c b/mach/proto/cg/main.c
index 08d5c46c2..dc1c51139 100644
--- a/mach/proto/cg/main.c
+++ b/mach/proto/cg/main.c
@@ -67,6 +67,7 @@ main(argc,argv) char **argv; {
 		error("Usage: %s EMfile [ asfile ]",progname);
 	in_init(argv[0]);
 	out_init(argv[1]);
+	in_start();
 	codegen(startupcode,maxply,TRUE,MAXINT,0);
 	in_finish();
 	if (!endofprog)