diff --git a/src/proof_system/prover.rs b/src/proof_system/prover.rs
index 7a536a9d..54755716 100644
--- a/src/proof_system/prover.rs
+++ b/src/proof_system/prover.rs
@@ -149,8 +149,8 @@ impl Prover {
 
     /// Adds the blinding scalars to a given vector. Always the same elements
     /// of 'w_vec' are modified at the beginning of it, and appended at the end:
-    /// if hiding degree = 1: (b2*X(n+1) + b1*X^n - b2*X - b1) + w_vec
-    /// if hiding degree = 2: (b3*X^(n+2) + b2*X(n+1) + b1*X^n - b3*X^2 - b2*X
+    /// if hiding degree = 1: (b2*X^(n+1) + b1*X^n - b2*X - b1) + w_vec
+    /// if hiding degree = 2: (b3*X^(n+2) + b2*X^(n+1) + b1*X^n - b3*X^2 - b2*X
     /// - b1) + w_vec
     pub(crate) fn blind_poly<R: RngCore + CryptoRng>(
         w_vec: &Vec<BlsScalar>,