diff --git a/package-lock.json b/package-lock.json
index 106661da..d667227c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@0xpolygonid/js-sdk",
-  "version": "1.39.3",
+  "version": "1.39.4",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@0xpolygonid/js-sdk",
-      "version": "1.39.3",
+      "version": "1.39.4",
       "license": "MIT or Apache-2.0",
       "dependencies": {
         "@iden3/onchain-non-merklized-issuer-base-abi": "0.0.3",
diff --git a/package.json b/package.json
index 0ddb8f97..e6d628a8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@0xpolygonid/js-sdk",
-  "version": "1.39.3",
+  "version": "1.39.4",
   "description": "SDK to work with Polygon ID",
   "source": "./src/index.ts",
   "exports": {
diff --git a/src/iden3comm/packers/zkp-default.ts b/src/iden3comm/packers/zkp-default.ts
index 4f1dada0..45a0fff6 100644
--- a/src/iden3comm/packers/zkp-default.ts
+++ b/src/iden3comm/packers/zkp-default.ts
@@ -42,10 +42,9 @@ export class DefaultZKPPacker extends ZKPPacker {
    * @throws If the circuit data (proving key or wasm) is not found for the given circuit ID.
    */
   async pack(payload: Uint8Array, params: ZKPPackerParams): Promise<Uint8Array> {
-    const provingMethodAlg = params.provingMethodAlg;
-    const circuitId = provingMethodAlg.circuitId as CircuitId;
-    const provingParamsKey = provingMethodAlg.toString();
-
+    this.validateZKPPackerParams(params);
+    const provingParamsKey = params.provingMethodAlg.toString();
+    const circuitId = params.provingMethodAlg.circuitId;
     if (!this.provingParamsMap.has(provingParamsKey)) {
       const { provingKey, wasm } = await this.circuitStorage.loadCircuitData(
         circuitId as CircuitId,
diff --git a/src/iden3comm/packers/zkp.ts b/src/iden3comm/packers/zkp.ts
index 9a1e3bfa..c54a859a 100644
--- a/src/iden3comm/packers/zkp.ts
+++ b/src/iden3comm/packers/zkp.ts
@@ -128,6 +128,7 @@ export class ZKPPacker implements IPacker {
    * @returns `Promise<Uint8Array>`
    */
   async pack(payload: Uint8Array, params: ZKPPackerParams): Promise<Uint8Array> {
+    this.validateZKPPackerParams(params);
     const provingMethod = await getProvingMethod(params.provingMethodAlg);
     const provingParams = this.provingParamsMap.get(params.provingMethodAlg.toString());
 
@@ -229,6 +230,19 @@ export class ZKPPacker implements IPacker {
       !alg?.length || alg.some((a) => supportedAlgArr.includes(a as AcceptJwzAlgorithms));
     return algSupported && circuitIdSupported;
   }
+
+  protected validateZKPPackerParams(value: ZKPPackerParams) {
+    const { provingMethodAlg } = value;
+    if (!(provingMethodAlg instanceof ProvingMethodAlg)) {
+      throw new TypeError('provingMethodAlg must be an instance of ProvingMethodAlg');
+    }
+    if (!provingMethodAlg.alg) {
+      throw new Error(`provingMethodAlg.alg is required and must be a non-empty string`);
+    }
+    if (!provingMethodAlg.circuitId) {
+      throw new Error(`provingMethodAlg.circuitId is required and must be a non-empty string`);
+    }
+  }
 }
 
 const verifySender = async (token: Token, msg: BasicMessage): Promise<void> => {