diff --git a/usr.sbin/crunch/crunchgen/crunchgen.c b/usr.sbin/crunch/crunchgen/crunchgen.c
index 0dddb08ed2ba..2b16894ddbc4 100644
--- a/usr.sbin/crunch/crunchgen/crunchgen.c
+++ b/usr.sbin/crunch/crunchgen/crunchgen.c
@@ -915,7 +915,7 @@ void top_makefile_rules(FILE *outmk)
 {
 	prog_t *p;
 
-	fprintf(outmk, "LIBS=");
+	fprintf(outmk, "LIBS+=");
 	output_strlst(outmk, libs);
 
 	if (makeobj) {