diff --git a/ld/config/hmake-sun4 b/ld/config/hmake-sun4
index eb6c569b82..3a17873b01 100755
--- a/ld/config/hmake-sun4
+++ b/ld/config/hmake-sun4
@@ -1 +1,4 @@
 CDEFINES=-DHOST_SYS=SUN4_SYS
+YACC=yacc -tvd
+
+