diff --git a/direct/src/interval/SoundInterval.py b/direct/src/interval/SoundInterval.py
index c0e2597408..e75b0e11b2 100644
--- a/direct/src/interval/SoundInterval.py
+++ b/direct/src/interval/SoundInterval.py
@@ -27,7 +27,7 @@ class SoundInterval(Interval):
         # Record instance variables
         self.sound = sound
         self.loop = loop
-        self.wantSound = base.wantAnySound
+        self.wantSound = base.wantSfx
         # If no duration given use sound's duration as interval's duration
         if duration == 0.0:
             if self.wantSound: