diff --git a/.changeset/young-crews-dream.md b/.changeset/young-crews-dream.md
new file mode 100644
index 0000000000..6d015cc1b1
--- /dev/null
+++ b/.changeset/young-crews-dream.md
@@ -0,0 +1,6 @@
+---
+'@moralisweb3/evm-api': patch
+'@moralisweb3/evm-utils': patch
+---
+
+Support not defined `contractType` for NFT types.
diff --git a/packages/evmApi/src/resolvers/nft/getNFTContractMetadata.ts b/packages/evmApi/src/resolvers/nft/getNFTContractMetadata.ts
index 273d48298a..e6d61953a3 100644
--- a/packages/evmApi/src/resolvers/nft/getNFTContractMetadata.ts
+++ b/packages/evmApi/src/resolvers/nft/getNFTContractMetadata.ts
@@ -6,7 +6,7 @@ import {
   EvmChain,
   EvmChainish,
   EvmNftMetadata,
-  validateValidEvmContractType,
+  noramlizeEvmNftContractType,
 } from '@moralisweb3/evm-utils';
 import { operations } from '../../generated/types';
 import { EvmChainResolver } from '../EvmChainResolver';
@@ -36,7 +36,7 @@ export const getNFTContractMetadata = createEndpointFactory((core) =>
         chain: EvmChainResolver.resolve(params.chain, core),
         tokenAddress: EvmAddress.create(data.token_address, core),
         syncedAt: data.synced_at ? new Date(data.synced_at) : null,
-        contractType: data.contract_type ? validateValidEvmContractType(data.contract_type) : null,
+        contractType: noramlizeEvmNftContractType(data.contract_type),
       }),
     resultToJson: (data) => data.toJSON(),
     parseParams: (params: Params): ApiParams => ({
diff --git a/packages/evmUtils/src/dataTypes/EvmNft/EvmNft.ts b/packages/evmUtils/src/dataTypes/EvmNft/EvmNft.ts
index 869e0d8a45..416a8c14f5 100644
--- a/packages/evmUtils/src/dataTypes/EvmNft/EvmNft.ts
+++ b/packages/evmUtils/src/dataTypes/EvmNft/EvmNft.ts
@@ -10,7 +10,7 @@ import MoralisCore, {
 } from '@moralisweb3/core';
 import { EvmAddress } from '../EvmAddress';
 import { EvmChain } from '../EvmChain';
-import { validateValidEvmContractType } from '../EvmNftContractType';
+import { noramlizeEvmNftContractType } from '../EvmNftContractType';
 import { EvmNftData, EvmNftInput } from './types';
 
 /**
@@ -53,7 +53,7 @@ export class EvmNft implements MoralisDataObject {
   static parse = (data: EvmNftInput, core: MoralisCore): EvmNftData => ({
     ...data,
     chain: EvmChain.create(data.chain, core),
-    contractType: validateValidEvmContractType(data.contractType),
+    contractType: noramlizeEvmNftContractType(data.contractType),
     tokenAddress: EvmAddress.create(data.tokenAddress, core),
     metadata: maybe(data.metadata, this.validateMetadata),
     tokenUri: maybe(data.tokenUri),
diff --git a/packages/evmUtils/src/dataTypes/EvmNft/types.ts b/packages/evmUtils/src/dataTypes/EvmNft/types.ts
index 69b39d77eb..41e68b5d1d 100644
--- a/packages/evmUtils/src/dataTypes/EvmNft/types.ts
+++ b/packages/evmUtils/src/dataTypes/EvmNft/types.ts
@@ -51,7 +51,7 @@ export interface EvmNftInput {
  */
 export interface EvmNftData {
   tokenId: number | string;
-  contractType: EvmNftContractType;
+  contractType?: EvmNftContractType;
   chain: EvmChain;
   tokenUri?: string;
   tokenAddress: EvmAddress;
diff --git a/packages/evmUtils/src/dataTypes/EvmNftCollection/EvmNftCollection.test.ts b/packages/evmUtils/src/dataTypes/EvmNftCollection/EvmNftCollection.test.ts
index feb74b7c2c..19fe695253 100644
--- a/packages/evmUtils/src/dataTypes/EvmNftCollection/EvmNftCollection.test.ts
+++ b/packages/evmUtils/src/dataTypes/EvmNftCollection/EvmNftCollection.test.ts
@@ -38,7 +38,7 @@ describe('EvmNftCollection', () => {
   it('should throw an error when creating with an invalid contractType', () => {
     expect(() =>
       EvmNftCollection.create({ ...exampleInput, contractType: 'ERC100' }),
-    ).toThrowErrorMatchingInlineSnapshot(`"[C0005] Invalid NFT contract type provided"`);
+    ).toThrowError('[C0005] Invalid NFT contract type provided');
   });
 
   /**
diff --git a/packages/evmUtils/src/dataTypes/EvmNftCollection/EvmNftCollection.ts b/packages/evmUtils/src/dataTypes/EvmNftCollection/EvmNftCollection.ts
index 6be2b99b58..1b93db0d22 100644
--- a/packages/evmUtils/src/dataTypes/EvmNftCollection/EvmNftCollection.ts
+++ b/packages/evmUtils/src/dataTypes/EvmNftCollection/EvmNftCollection.ts
@@ -1,7 +1,7 @@
 import MoralisCore, { MoralisDataObject, MoralisCoreProvider } from '@moralisweb3/core';
 import { EvmAddress } from '../EvmAddress';
 import { EvmChain } from '../EvmChain';
-import { validateValidEvmContractType } from '../EvmNftContractType';
+import { noramlizeEvmNftContractType } from '../EvmNftContractType';
 import { EvmNftCollectionData, EvmNftCollectionInput } from './types';
 
 /**
@@ -39,7 +39,7 @@ export class EvmNftCollection implements MoralisDataObject {
     ...data,
     tokenAddress: EvmAddress.create(data.tokenAddress, core),
     chain: EvmChain.create(data.chain, core),
-    contractType: validateValidEvmContractType(data.contractType),
+    contractType: noramlizeEvmNftContractType(data.contractType),
   });
 
   /**
diff --git a/packages/evmUtils/src/dataTypes/EvmNftCollection/types.ts b/packages/evmUtils/src/dataTypes/EvmNftCollection/types.ts
index 4107c05b22..077d152d7e 100644
--- a/packages/evmUtils/src/dataTypes/EvmNftCollection/types.ts
+++ b/packages/evmUtils/src/dataTypes/EvmNftCollection/types.ts
@@ -28,7 +28,7 @@ export interface EvmNftCollectionInput {
  */
 export interface EvmNftCollectionData {
   chain: EvmChain;
-  contractType: EvmNftContractType;
+  contractType?: EvmNftContractType;
   name: string;
   symbol: string;
   tokenAddress: EvmAddress;
diff --git a/packages/evmUtils/src/dataTypes/EvmNftContractType.test.ts b/packages/evmUtils/src/dataTypes/EvmNftContractType.test.ts
new file mode 100644
index 0000000000..f1b761d03b
--- /dev/null
+++ b/packages/evmUtils/src/dataTypes/EvmNftContractType.test.ts
@@ -0,0 +1,23 @@
+import { noramlizeEvmNftContractType, EvmNftContractType } from './EvmNftContractType';
+
+describe('noramlizeEvmNftContractType()', () => {
+  it('returns ERC721', () => {
+    expect(noramlizeEvmNftContractType('erc721')).toEqual(EvmNftContractType.ERC721);
+    expect(noramlizeEvmNftContractType('ERC721')).toEqual(EvmNftContractType.ERC721);
+  });
+
+  it('returns ERC1155', () => {
+    expect(noramlizeEvmNftContractType('erc1155')).toEqual(EvmNftContractType.ERC1155);
+    expect(noramlizeEvmNftContractType('ERC1155')).toEqual(EvmNftContractType.ERC1155);
+  });
+
+  it('returns undefined', () => {
+    expect(noramlizeEvmNftContractType('')).toEqual(undefined);
+    expect(noramlizeEvmNftContractType(null as any)).toEqual(undefined);
+    expect(noramlizeEvmNftContractType(undefined as any)).toEqual(undefined);
+  });
+
+  it('throws error if value is undefined', () => {
+    expect(() => noramlizeEvmNftContractType('wrongErc')).toThrowError('Invalid NFT contract type provided');
+  });
+});
diff --git a/packages/evmUtils/src/dataTypes/EvmNftContractType.ts b/packages/evmUtils/src/dataTypes/EvmNftContractType.ts
index e4585cb3d6..04b4de1788 100644
--- a/packages/evmUtils/src/dataTypes/EvmNftContractType.ts
+++ b/packages/evmUtils/src/dataTypes/EvmNftContractType.ts
@@ -5,24 +5,20 @@ export enum EvmNftContractType {
   ERC1155 = 'ERC1155',
 }
 
-export const isValidEvmContractType = (value: string): value is EvmNftContractType => {
+export function noramlizeEvmNftContractType(value: string): EvmNftContractType | undefined {
+  if (!value) {
+    return undefined;
+  }
+
   switch (value.toUpperCase()) {
     case EvmNftContractType.ERC1155:
-      return true;
+      return EvmNftContractType.ERC1155;
     case EvmNftContractType.ERC721:
-      return true;
-    default:
-      return false;
+      return EvmNftContractType.ERC721;
   }
-};
 
-export const validateValidEvmContractType = (value: string) => {
-  if (!isValidEvmContractType(value)) {
-    throw new MoralisCoreError({
-      code: CoreErrorCode.INVALID_ARGUMENT,
-      message: 'Invalid NFT contract type provided',
-    });
-  }
-
-  return value;
-};
+  throw new MoralisCoreError({
+    code: CoreErrorCode.INVALID_ARGUMENT,
+    message: `Invalid NFT contract type provided: ${value}`,
+  });
+}
diff --git a/packages/evmUtils/src/dataTypes/EvmNftMetadata/types.ts b/packages/evmUtils/src/dataTypes/EvmNftMetadata/types.ts
index 50a21ea66a..c86506b792 100644
--- a/packages/evmUtils/src/dataTypes/EvmNftMetadata/types.ts
+++ b/packages/evmUtils/src/dataTypes/EvmNftMetadata/types.ts
@@ -22,7 +22,7 @@ export interface EvmNftMetadataInput {
   tokenAddress: EvmAddressish;
   name: string;
   symbol: string;
-  contractType: EvmNftContractType | null;
+  contractType?: EvmNftContractType;
   syncedAt: DateInput | null;
 }
 
@@ -34,6 +34,6 @@ export interface EvmNftMetadataData {
   tokenAddress: EvmAddress;
   name: string;
   symbol: string;
-  contractType: EvmNftContractType | null;
+  contractType?: EvmNftContractType;
   syncedAt?: Date;
 }