diff --git a/packages/superdough/superdough.mjs b/packages/superdough/superdough.mjs
index a37504b1d..36bd68969 100644
--- a/packages/superdough/superdough.mjs
+++ b/packages/superdough/superdough.mjs
@@ -630,6 +630,7 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
   // effects
   coarse !== undefined && chain.push(getWorklet(ac, 'coarse-processor', { coarse }));
   crush !== undefined && chain.push(getWorklet(ac, 'crush-processor', { crush }));
+  shape !== undefined && chain.push(getWorklet(ac, 'shape-processor', { shape, postgain: shapevol }));
   distort !== undefined && chain.push(getDistortion(distort, distortvol, distorttype));
 
   if (tremolosync != null) {