diff --git a/panda/src/audiotraits/openalAudioSound.cxx b/panda/src/audiotraits/openalAudioSound.cxx
index 8b0c009db8..85bfaea9bb 100644
--- a/panda/src/audiotraits/openalAudioSound.cxx
+++ b/panda/src/audiotraits/openalAudioSound.cxx
@@ -630,6 +630,9 @@ get_balance() const {
 void OpenALAudioSound::
 set_play_rate(float play_rate) {
   _play_rate = play_rate;
+  if (_source) {
+    alSourcef(_source, AL_PITCH, play_rate);
+  }
 }
 
 ////////////////////////////////////////////////////////////////////