diff --git a/scripts/test-bls12377-msm.ts b/scripts/test-bls12377-msm.ts
index 3b41810e..e7deb1dd 100644
--- a/scripts/test-bls12377-msm.ts
+++ b/scripts/test-bls12377-msm.ts
@@ -19,7 +19,7 @@ console.log(`running msm with 2^${n} = ${2 ** n} inputs`);
 
 tic("random points");
 let points = Field.getZeroPointers(N, CurveAffine.sizeAffine);
-let scratch = Field.getPointers(20);
+let scratch = Field.getPointers(40);
 CurveAffine.randomPoints(scratch, points);
 
 let scalars = Random.randomScalars(N);