diff --git a/direct/src/interval/Interval.py b/direct/src/interval/Interval.py
index 6b2cbf9b8f..0907c6d6a0 100644
--- a/direct/src/interval/Interval.py
+++ b/direct/src/interval/Interval.py
@@ -250,7 +250,7 @@ class Interval(DirectObject):
     def privReverseInstant(self):
         # Subclasses may redefine this function
         self.state = CInterval.SStarted
-        self.privStep(self.getDuration())
+        self.privStep(0)
         self.state = CInterval.SInitial
 
     def privReverseFinalize(self):