diff --git a/.eslintrc.js b/.eslintrc.js
index f0f022816daaf..7a367860fa584 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -376,6 +376,7 @@ module.exports = {
 			files: ['./packages/nodes-base/credentials/*.credentials.ts'],
 			plugins: ['eslint-plugin-n8n-nodes-base'],
 			rules: {
+				'n8n-nodes-base/cred-class-field-authenticate-type-assertion': 'error',
 				'n8n-nodes-base/cred-class-field-display-name-missing-oauth2': 'error',
 				'n8n-nodes-base/cred-class-field-name-missing-oauth2': 'error',
 				'n8n-nodes-base/cred-class-field-name-unsuffixed': 'error',
diff --git a/packages/nodes-base/credentials/KoBoToolboxApi.credentials.ts b/packages/nodes-base/credentials/KoBoToolboxApi.credentials.ts
index 145989a429de8..38e54c4f91377 100644
--- a/packages/nodes-base/credentials/KoBoToolboxApi.credentials.ts
+++ b/packages/nodes-base/credentials/KoBoToolboxApi.credentials.ts
@@ -25,14 +25,14 @@ export class KoBoToolboxApi implements ICredentialType {
 			hint: 'You can get your API token at https://[api-root]/token/?format=json (for a logged in user)',
 		},
 	];
-	authenticate = {
+	authenticate: IAuthenticateGeneric = {
 		type: 'generic',
 		properties: {
 			headers: {
 				Authorization: '=Token {{$credentials.token}}',
 			},
 		},
-	} as IAuthenticateGeneric;
+	};
 
 	test: ICredentialTestRequest = {
 		request: {
diff --git a/packages/nodes-base/credentials/UrlScanIoApi.credentials.ts b/packages/nodes-base/credentials/UrlScanIoApi.credentials.ts
index b4076faf9897e..0ca8eb53f0055 100644
--- a/packages/nodes-base/credentials/UrlScanIoApi.credentials.ts
+++ b/packages/nodes-base/credentials/UrlScanIoApi.credentials.ts
@@ -25,7 +25,7 @@ export class UrlScanIoApi implements ICredentialType {
 				'API-KEY': '={{$credentials.apiKey}}',
 			},
 		},
-	} as IAuthenticateGeneric;
+	};
 
 	test: ICredentialTestRequest = {
 		request: {