diff --git a/src/cmd/5g/ggen.c b/src/cmd/5g/ggen.c
index 3f38318e75b..832767e8620 100644
--- a/src/cmd/5g/ggen.c
+++ b/src/cmd/5g/ggen.c
@@ -14,7 +14,6 @@ defframe(Prog *ptxt)
 {
 	// fill in argument size
 	ptxt->to.type = D_CONST2;
-	ptxt->reg = 0; // flags
 	ptxt->to.offset2 = rnd(curfn->type->argwid, widthptr);
 
 	// fill in final stack size