diff --git a/common/nymcoconut/src/scheme/verification.rs b/common/nymcoconut/src/scheme/verification.rs
index 1cda14730e..067eb32185 100644
--- a/common/nymcoconut/src/scheme/verification.rs
+++ b/common/nymcoconut/src/scheme/verification.rs
@@ -394,7 +394,8 @@ mod tests {
 
         //#3
         let h0 = sig_a_zero.0;
-        let h1 = &scalar_2_inv * &sig_a_zero.1 + &scalar_2_inv * &sig_zero_a.1;
+        // Removed unnecessary references
+        let h1 = scalar_2_inv * sig_a_zero.1 + scalar_2_inv * sig_zero_a.1;
         let forged_signature = Signature(h0, h1);
         let a_half = a * scalar_2_inv;
         let new_plaintext = vec![&a_half, &a_half];
@@ -413,7 +414,8 @@ mod tests {
         let scalar_4_inv = Scalar::invert(&scalar_4).unwrap();
         let scalar_3_over_4 = scalar_3 * scalar_4_inv;
 
-        let h1_2 = &scalar_4_inv * &sig_a_zero.1 + &scalar_3_over_4 * &sig_zero_a.1;
+        // Removed unnecessary references
+        let h1_2 = scalar_4_inv * sig_a_zero.1 + scalar_3_over_4 * sig_zero_a.1;
         let forged_signature_2 = Signature(h0, h1_2);
         let a_quarter = a * scalar_4_inv;
         let a_3_over_4 = a * scalar_3_over_4;
@@ -427,4 +429,5 @@ mod tests {
             &forged_signature_2
         ));
     }
+
 }
diff --git a/wasm/zknym-lib/src/generic_scheme/coconut/mod.rs b/wasm/zknym-lib/src/generic_scheme/coconut/mod.rs
index 178f53106c..5ac1b00dd7 100644
--- a/wasm/zknym-lib/src/generic_scheme/coconut/mod.rs
+++ b/wasm/zknym-lib/src/generic_scheme/coconut/mod.rs
@@ -96,17 +96,14 @@ pub fn ttp_keygen(
 pub fn sign_simple(
     attributes: Vec<String>,
     keys: &KeyPairWrapper,
-    parameters: Option<ParametersWrapper>,
 ) -> Result<CredentialWrapper, ZkNymError> {
-    let params = get_params(&parameters);
-
     let public_attributes = attributes
         .into_iter()
         .map(hash_to_scalar)
         .collect::<Vec<_>>();
     let attributes_ref = public_attributes.iter().collect::<Vec<_>>();
 
-    nym_coconut::sign(params, keys.secret_key(), &attributes_ref)
+    nym_coconut::sign(keys.secret_key(), &attributes_ref)
         .map(Into::into)
         .map_err(Into::into)
 }