diff --git a/cvat-ui/src/components/login-page/login-form.tsx b/cvat-ui/src/components/login-page/login-form.tsx
index a134cab67810..5b8972eb2d44 100644
--- a/cvat-ui/src/components/login-page/login-form.tsx
+++ b/cvat-ui/src/components/login-page/login-form.tsx
@@ -25,6 +25,10 @@ function LoginFormComponent(props: Props): JSX.Element {
                 hasFeedback
                 name='email'
                 rules={[
+                    {
+                        type: 'email',
+                        message: 'The input is not valid E-mail!',
+                    },
                     {
                         required: true,
                         message: 'Please specify a email',