diff --git a/packages/superdough/worklets.mjs b/packages/superdough/worklets.mjs
index 43e58e33..7017be95 100644
--- a/packages/superdough/worklets.mjs
+++ b/packages/superdough/worklets.mjs
@@ -78,7 +78,7 @@ class ShapeProcessor extends AudioWorkletProcessor {
     let shape_param = parameters.shape[0];
     const postgain = Math.max(0.001, Math.min(1, parameters.postgain[0]));
     const shape = shape_param * 100;
-    return processSample(inputs, outputs, (block, n) => {
+    return processSample(inputs, outputs, (block) => {
       const val = ((1 + shape) * block) / (1 + shape * Math.abs(block));
       return val * postgain;
     });