diff --git a/framework/src/modules/pos/commands/register_validator.ts b/framework/src/modules/pos/commands/register_validator.ts
index 79dad4e79c7..b851af34b80 100644
--- a/framework/src/modules/pos/commands/register_validator.ts
+++ b/framework/src/modules/pos/commands/register_validator.ts
@@ -91,7 +91,7 @@ export class RegisterValidatorCommand extends BaseCommand {
 		} = context;
 		const methodContext = context.getMethodContext();
 
-		const isRegistered = await this._validatorsMethod.registerValidatorKeys(
+		await this._validatorsMethod.registerValidatorKeys(
 			methodContext,
 			transaction.senderAddress,
 			blsKey,
@@ -99,10 +99,6 @@ export class RegisterValidatorCommand extends BaseCommand {
 			proofOfPossession,
 		);
 
-		if (!isRegistered) {
-			throw new Error('Failed to register validator keys');
-		}
-
 		this._feeMethod.payFee(context, this._validatorRegistrationFee);
 
 		const validatorSubstore = this.stores.get(ValidatorStore);
diff --git a/framework/src/modules/pos/module.ts b/framework/src/modules/pos/module.ts
index 341b26a618a..af4422b50ec 100644
--- a/framework/src/modules/pos/module.ts
+++ b/framework/src/modules/pos/module.ts
@@ -498,16 +498,13 @@ export class PoSModule extends BaseModule {
 			}
 		} else {
 			for (const posValidator of genesisStore.validators) {
-				const valid = await this._validatorsMethod.registerValidatorKeys(
+				await this._validatorsMethod.registerValidatorKeys(
 					methodContext,
 					posValidator.address,
 					posValidator.blsKey,
 					posValidator.generatorKey,
 					posValidator.proofOfPossession,
 				);
-				if (!valid) {
-					throw new Error('Invalid validator key.');
-				}
 			}
 		}
 		const stakerStore = this.stores.get(StakerStore);
diff --git a/framework/src/modules/pos/types.ts b/framework/src/modules/pos/types.ts
index 83804faf0cf..99713ce6aa6 100644
--- a/framework/src/modules/pos/types.ts
+++ b/framework/src/modules/pos/types.ts
@@ -63,7 +63,7 @@ export interface ValidatorsMethod {
 		blsKey: Buffer,
 		generatorKey: Buffer,
 		proofOfPossession: Buffer,
-	): Promise<boolean>;
+	): Promise<void>;
 	registerValidatorWithoutBLSKey(
 		methodContext: MethodContext,
 		validatorAddress: Buffer,
diff --git a/framework/src/modules/validators/method.ts b/framework/src/modules/validators/method.ts
index 4d0c478a7e2..6849a64f957 100644
--- a/framework/src/modules/validators/method.ts
+++ b/framework/src/modules/validators/method.ts
@@ -44,7 +44,7 @@ export class ValidatorsMethod extends BaseMethod {
 		blsKey: Buffer,
 		generatorKey: Buffer,
 		proofOfPossession: Buffer,
-	): Promise<boolean> {
+	): Promise<void> {
 		if (validatorAddress.length !== ADDRESS_LENGTH) {
 			throw new Error(`Validator address must be ${ADDRESS_LENGTH} bytes long.`);
 		}
@@ -96,8 +96,6 @@ export class ValidatorsMethod extends BaseMethod {
 			proofOfPossession,
 			result: KeyRegResult.SUCCESS,
 		});
-
-		return true;
 	}
 
 	public async registerValidatorWithoutBLSKey(
diff --git a/framework/test/unit/modules/pos/commands/validator_registration.spec.ts b/framework/test/unit/modules/pos/commands/validator_registration.spec.ts
index 06b32ab68e6..4fc8df99a59 100644
--- a/framework/test/unit/modules/pos/commands/validator_registration.spec.ts
+++ b/framework/test/unit/modules/pos/commands/validator_registration.spec.ts
@@ -113,7 +113,7 @@ describe('Validator registration command', () => {
 		});
 		mockValidatorsMethod = {
 			setValidatorGeneratorKey: jest.fn(),
-			registerValidatorKeys: jest.fn().mockResolvedValue(true),
+			registerValidatorKeys: jest.fn(),
 			registerValidatorWithoutBLSKey: jest.fn().mockResolvedValue(true),
 			getValidatorKeys: jest.fn(),
 			getGeneratorsBetweenTimestamps: jest.fn(),
diff --git a/framework/test/unit/modules/pos/module.spec.ts b/framework/test/unit/modules/pos/module.spec.ts
index 61f0eb2c45d..31041231cec 100644
--- a/framework/test/unit/modules/pos/module.spec.ts
+++ b/framework/test/unit/modules/pos/module.spec.ts
@@ -134,7 +134,7 @@ describe('PoS module', () => {
 			};
 			const validatorMethod = {
 				setValidatorGeneratorKey: jest.fn(),
-				registerValidatorKeys: jest.fn().mockResolvedValue(true),
+				registerValidatorKeys: jest.fn(),
 				registerValidatorWithoutBLSKey: jest.fn().mockResolvedValue(true),
 				getValidatorKeys: jest.fn().mockResolvedValue({
 					blsKey: utils.getRandomBytes(48),
@@ -276,11 +276,12 @@ describe('PoS module', () => {
 				);
 			});
 
-			it('should fail if registerValidatorKeys return false', async () => {
-				(pos['_validatorsMethod'].registerValidatorKeys as jest.Mock).mockResolvedValue(false);
-
+			it('should fail if registerValidatorKeys throws an error', async () => {
+				(pos['_validatorsMethod'].registerValidatorKeys as jest.Mock).mockRejectedValue(
+					new Error('error'),
+				);
 				await expect(pos.initGenesisState(context)).toResolve();
-				await expect(pos.finalizeGenesisState(context)).rejects.toThrow('Invalid validator key');
+				await expect(pos.finalizeGenesisState(context)).rejects.toThrow('error');
 			});
 
 			it('should fail if getLockedAmount return different value', async () => {
diff --git a/framework/test/unit/modules/validators/method.spec.ts b/framework/test/unit/modules/validators/method.spec.ts
index e948a094fd0..8eb9c00ffc4 100644
--- a/framework/test/unit/modules/validators/method.spec.ts
+++ b/framework/test/unit/modules/validators/method.spec.ts
@@ -113,15 +113,14 @@ describe('ValidatorsModuleMethod', () => {
 				result: KeyRegResult.SUCCESS,
 			});
 
-			await expect(
-				validatorsModule.method.registerValidatorKeys(
-					methodContext,
-					address,
-					blsKey,
-					generatorKey,
-					proofOfPossession,
-				),
-			).resolves.toBe(true);
+			await validatorsModule.method.registerValidatorKeys(
+				methodContext,
+				address,
+				blsKey,
+				generatorKey,
+				proofOfPossession,
+			);
+
 			const returnedAccount = await validatorsSubStore.get(methodContext, address);
 			const returnedAddress = await blsKeysSubStore.get(methodContext, blsKey);
 			expect(returnedAccount).toStrictEqual({ generatorKey, blsKey });