diff --git a/flix/util.h b/flix/util.h
index f3971aa..fc1b421 100644
--- a/flix/util.h
+++ b/flix/util.h
@@ -111,7 +111,7 @@ struct Value {
 class Rate {
 public:
 	float rate;
-	float last = 0;
+	float last = -INFINITY;
 	Rate(float rate) : rate(rate) {}
 
 	operator bool() {