diff --git a/src/pkg/runtime/vlrt_arm.c b/src/pkg/runtime/vlrt_arm.c
index 50f33710b1..ab80501775 100644
--- a/src/pkg/runtime/vlrt_arm.c
+++ b/src/pkg/runtime/vlrt_arm.c
@@ -197,12 +197,14 @@ void
 runtime·int64tofloat64(Vlong y, double d)
 {
 	d = _v2d(y);
+	USED(&d); // FLUSH
 }
 
 void
 runtime·uint64tofloat64(Vlong y, double d)
 {
 	d = _ul2d(y.hi)*4294967296. + _ul2d(y.lo);
+	USED(&d); // FLUSH
 }
 
 static void