diff --git a/packages/protocols/package.json b/packages/protocols/package.json
index ca595f1..34c2e12 100644
--- a/packages/protocols/package.json
+++ b/packages/protocols/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@libsem/protocols",
-  "version": "1.0.21",
+  "version": "1.0.22",
   "description": "Client library for generating and verifying Semaphore & Rln ZK proofs.",
   "main": "dist/index.node.js",
   "types": "dist/types/index.d.ts",
diff --git a/packages/protocols/src/semaphore.ts b/packages/protocols/src/semaphore.ts
index b37aded..d8cc3a5 100644
--- a/packages/protocols/src/semaphore.ts
+++ b/packages/protocols/src/semaphore.ts
@@ -36,8 +36,8 @@ class Semaphore extends ZkProtocol {
    * @param nLevels depth of tree
    * @returns
    */
-  genNullifierHash(externalNullifier: string | bigint, identityNullifier: string | bigint, nLevels: number): bigint {
-    return poseidonHash([BigInt(externalNullifier), BigInt(identityNullifier), BigInt(nLevels)])
+  genNullifierHash(externalNullifier: string | bigint, identityNullifier: string | bigint): bigint {
+    return poseidonHash([BigInt(externalNullifier), BigInt(identityNullifier)])
   }
 }
 
diff --git a/packages/protocols/tests/semaphore.test.ts b/packages/protocols/tests/semaphore.test.ts
index 224caa4..013957f 100644
--- a/packages/protocols/tests/semaphore.test.ts
+++ b/packages/protocols/tests/semaphore.test.ts
@@ -43,7 +43,7 @@ describe("Semaphore", () => {
       const identity = new ZkIdentity();
       const externalNullifier: string = genExternalNullifier("voting_1")
       const signal = "0x111"
-      const nullifierHash: bigint = Semaphore.genNullifierHash(externalNullifier, identity.getNullifier(), 20)
+      const nullifierHash: bigint = Semaphore.genNullifierHash(externalNullifier, identity.getNullifier())
       const identityCommitment: bigint = identity.genIdentityCommitment()
 
       const commitments: Array<bigint> = Object.assign([], identityCommitments)