diff --git a/circuits/idHashMapping.circom b/circuits/idHashMapping.circom
index b44b4a9..caa6d4f 100644
--- a/circuits/idHashMapping.circom
+++ b/circuits/idHashMapping.circom
@@ -7,7 +7,6 @@ template IdHashMapping(maxSubLen, maxSaltLen){
     signal input sub[maxSubLen];
     signal input subLen;
     signal input salt[maxSaltLen];
-    signal input saltLen;
     component poseidonHasher = IdHashPoseidon(maxSubLen, maxSaltLen);
 
     poseidonHasher.sub <== sub;
diff --git a/tests/idHashMapping.test.ts b/tests/idHashMapping.test.ts
index e9d89ca..5f816b5 100644
--- a/tests/idHashMapping.test.ts
+++ b/tests/idHashMapping.test.ts
@@ -52,7 +52,6 @@ describe("Id Hash Mapping Test", () => {
         ),
         subLen: 21,
         salt: Array.from(hexToBytes("a677999396dc49a28ad6c9c242719bb3"), (b) => b),
-        saltLen: 16
       };
       // will be packed into [13846356912322354, 85189581377597132177622858375434543549286969422497087616931493135530328064, 0,0,0,0,0,0,0]