diff --git a/src/plonk.rs b/src/plonk.rs
index 1dc9ab14..86be0dec 100644
--- a/src/plonk.rs
+++ b/src/plonk.rs
@@ -375,7 +375,7 @@ fn test_proving() {
     pubinputs[0] = Fp::one();
     pubinputs[0] += Fp::one();
     let pubinput = params
-        .commit_lagrange(&pubinputs, Blind(Field::one()))
+        .commit_lagrange(&pubinputs, Blind::default())
         .to_affine();
 
     for _ in 0..100 {