1 files changed, 4 insertions, 2 deletions
diff --git a/dom/animation/Animation.cpp b/dom/animation/Animation.cpp
index cefdbb76d..242a0c6d6 100644
--- a/dom/animation/Animation.cpp
+++ b/dom/animation/Animation.cpp
@@ -729,8 +729,10 @@ TimeStamp
 Animation::ElapsedTimeToTimeStamp(
   const StickyTimeDuration& aElapsedTime) const
 {
-  return AnimationTimeToTimeStamp(aElapsedTime +
-                                  mEffect->SpecifiedTiming().mDelay);
+  TimeDuration delay = mEffect
+                       ? mEffect->SpecifiedTiming().mDelay
+                       : TimeDuration();
+  return AnimationTimeToTimeStamp(aElapsedTime + delay);
 }