diff --git a/src/cmd/gc/sinit.c b/src/cmd/gc/sinit.c
index 18856cd3ac8..4550577a4f3 100644
--- a/src/cmd/gc/sinit.c
+++ b/src/cmd/gc/sinit.c
@@ -1260,6 +1260,8 @@ addvalue(InitPlan *p, vlong xoffset, Node *key, Node *n)
 	InitPlan *q;
 	InitEntry *e;
 
+	USED(key);
+
 	// special case: zero can be dropped entirely
 	if(iszero(n)) {
 		p->zero += n->type->width;
diff --git a/src/cmd/gc/typecheck.c b/src/cmd/gc/typecheck.c
index 7b10f33f087..b9c302ce8e0 100644
--- a/src/cmd/gc/typecheck.c
+++ b/src/cmd/gc/typecheck.c
@@ -1031,7 +1031,6 @@ reswitch:
 		}
 		n->left = args->n;
 		n->right = args->next->n;
-		args = nil;
 		n->list = nil;
 		n->type = types[TINT];
 		typecheck(&n->left, Erv);