diff --git a/docs/guides/error-handling.md b/docs/guides/error-handling.md
index 999307c2ab..f9b8829acc 100644
--- a/docs/guides/error-handling.md
+++ b/docs/guides/error-handling.md
@@ -99,7 +99,6 @@ BaseError
 │   │   TagNotFoundError
 │   │   TxNotInChainError
 │   │   UnknownTxError
-│   │   UnsignedTxError
 │   │   UnsupportedABIversionError
 │   │   UnsupportedVMversionError
 │
diff --git a/src/tx/tx-object.js b/src/tx/tx-object.js
index e590ea52c9..50ef1e2a8f 100644
--- a/src/tx/tx-object.js
+++ b/src/tx/tx-object.js
@@ -9,13 +9,7 @@ import { buildTx, calculateFee, unpackTx } from './builder'
 import { TX_TYPE } from './builder/schema'
 import { encode } from './builder/helpers'
 import { isHex } from '../utils/string'
-import {
-  InvalidTxError,
-  TypeError,
-  UnknownTxError,
-  InvalidSignatureError,
-  UnsignedTxError
-} from '../utils/errors'
+import { InvalidTxError, TypeError, UnknownTxError, InvalidSignatureError } from '../utils/errors'
 
 /**
  * Build transaction from object
@@ -152,7 +146,6 @@ export const TxObject = stampit({
      * @return {Array} Array of signatures
      */
     getSignatures () {
-      if (!this.isSigned) throw new UnsignedTxError()
       return this.signatures
     },
     /**
diff --git a/src/utils/errors.ts b/src/utils/errors.ts
index 4133752a42..70aa1da9d3 100644
--- a/src/utils/errors.ts
+++ b/src/utils/errors.ts
@@ -572,7 +572,7 @@ export class IllegalBidFeeError extends TransactionError {
 export class InvalidSignatureError extends TransactionError {
   constructor (message: string) {
     super(message)
-    this.name = 'UnsignedTxError'
+    this.name = 'InvalidSignatureError'
   }
 }
 
@@ -639,13 +639,6 @@ export class UnknownTxError extends TransactionError {
   }
 }
 
-export class UnsignedTxError extends TransactionError {
-  constructor () {
-    super('Signature not found, transaction is not signed')
-    this.name = 'UnsignedTxError'
-  }
-}
-
 export class UnsupportedABIversionError extends TransactionError {
   constructor (message: string) {
     super(message)
diff --git a/test/unit/tx-object.js b/test/unit/tx-object.js
index 5b9c0a0c76..8baabc4a1a 100644
--- a/test/unit/tx-object.js
+++ b/test/unit/tx-object.js
@@ -21,11 +21,7 @@ import { TX_TYPE } from '../../src/tx/builder/schema'
 import { generateKeyPair } from '../../src/utils/crypto'
 import MemoryAccount from '../../src/account/memory'
 import {
-  InvalidSignatureError,
-  InvalidTxError,
-  TypeError,
-  UnknownTxError,
-  UnsignedTxError
+  InvalidSignatureError, InvalidTxError, TypeError, UnknownTxError
 } from '../../src/utils/errors'
 
 describe('TxObject', () => {
@@ -87,10 +83,7 @@ describe('TxObject', () => {
       tx.isSigned.should.be.equal(true)
     })
 
-    it('Get signature on unsigned tx', () => {
-      expect(() => txObject.getSignatures())
-        .to.throw(UnsignedTxError, 'Signature not found, transaction is not signed')
-    })
+    it('Get signature on unsigned tx', () => expect(txObject.getSignatures()).to.eql([]))
 
     it('Invalid props', () => {
       expect(() => txObject.setProp(true)).to.throw(TypeError, 'Props should be an object')