diff --git a/software/src/AudioDelayExt.h b/software/src/AudioDelayExt.h
index f59e60807..ff6069817 100644
--- a/software/src/AudioDelayExt.h
+++ b/software/src/AudioDelayExt.h
@@ -77,7 +77,7 @@ class AudioDelayExt : public AudioStream {
       // karplus-strong. Also, delay times that short will produce higher
       // harmonics that crossfades of that length (that's kinda the point).
       // Just maxing here seems to work pretty well for KS.
-      target.phase += max(crossfade_dt, 1.0f / target.target);
+      target.phase += max(crossfade_dt, 1.0f / (target.target * AUDIO_SAMPLE_RATE));
       if (target.phase >= 1.0f) {
         target.phase = 0.0f;
         delay_secs[tap] = target.target;