diff --git a/src/app/features/issue/providers/github/github.const.ts b/src/app/features/issue/providers/github/github.const.ts
index d8734b2b3ab..8b56e4bb3c1 100644
--- a/src/app/features/issue/providers/github/github.const.ts
+++ b/src/app/features/issue/providers/github/github.const.ts
@@ -7,6 +7,7 @@ import {
 } from '../../../config/global-config.model';
 import { IssueProviderGithub } from '../../issue.model';
 import { ISSUE_PROVIDER_COMMON_FORM_FIELDS } from '../../common-issue-form-stuff.const';
+import { FormlyFieldConfig } from '@ngx-formly/core';
 
 export const DEFAULT_GITHUB_CFG: GithubCfg = {
   isEnabled: false,
@@ -42,8 +43,16 @@ export const GITHUB_CONFIG_FORM: LimitedFormlyFieldConfig<IssueProviderGithub>[]
     props: {
       label: T.F.GITHUB.FORM.TOKEN,
       required: true,
+      placeholder: 'ghp_... (classic token)',
       type: 'password',
     },
+    validators: {
+      token: {
+        expression: (c: { value: string | undefined }) => c.value?.startsWith('ghp_'),
+        message: (error: any, field: FormlyFieldConfig) =>
+          `${field.formControl?.value} ${T.F.GITHUB.FORM.INVALID_TOKEN_MESSAGE}`,
+      },
+    },
   },
   {
     type: 'link',
diff --git a/src/app/t.const.ts b/src/app/t.const.ts
index 1ab9bac1ad0..572b55518af 100644
--- a/src/app/t.const.ts
+++ b/src/app/t.const.ts
@@ -229,6 +229,7 @@ const T = {
         IS_ASSIGNEE_FILTER: 'F.GITHUB.FORM.IS_ASSIGNEE_FILTER',
         REPO: 'F.GITHUB.FORM.REPO',
         TOKEN: 'F.GITHUB.FORM.TOKEN',
+        INVALID_TOKEN_MESSAGE: 'F.GITHUB.FORM.INVALID_TOKEN_MESSAGE',
       },
       FORM_SECTION: {
         HELP: 'F.GITHUB.FORM_SECTION.HELP',
diff --git a/src/assets/i18n/en.json b/src/assets/i18n/en.json
index 7d5657fb159..2a5a41b037e 100644
--- a/src/assets/i18n/en.json
+++ b/src/assets/i18n/en.json
@@ -227,7 +227,8 @@
         "FILTER_USER": "Username (e.g. to filter out changes by yourself)",
         "IS_ASSIGNEE_FILTER": "Only import issues assigned to me to backlog",
         "REPO": "username/repositoryName",
-        "TOKEN": "Access Token"
+        "TOKEN": "Access Token",
+        "INVALID_TOKEN_MESSAGE": "is not a valid GitHub token. It must start with \"ghp_\"."
       },
       "FORM_SECTION": {
         "HELP": "<p>Here you can configure SuperProductivity to list open GitHub issues for a specific repository in the task creation panel in the daily planning view. They will be listed as suggestions and will provide a link to the issue as well as more information about it.</p> <p>In addition you can automatically import all open issues.</p><p>To get by usage limits and to access you can provide a an access token. <a href='https://docs.github.com/en/free-pro-team@latest/developers/apps/scopes-for-oauth-apps'>More info about its scopes can be found here</a>.",