diff --git a/core/src/timer.rs b/core/src/timer.rs
index 3a8162919..df9582f35 100644
--- a/core/src/timer.rs
+++ b/core/src/timer.rs
@@ -278,6 +278,7 @@ impl<'gc> Timers<'gc> {
         if let Some(mut timer) = timer {
             self.remove(id);
             timer.interval = interval;
+            timer.tick_time = self.cur_time + interval;
             self.timers.push(timer);
         } else {
             panic!("Changing delay of non-existent timer");