diff --git a/CHANGELOG.md b/CHANGELOG.md
index 609f41fe85bf3a5c327907c17d1406c9724fb1b1..b514f51041341e462010e49cbaeb23e12df92943 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -59,6 +59,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Updated the path to python for DL models inside automatic annotation documentation (<https://github.com/openvinotoolkit/cvat/pull/2847>)
 - Fixed of receiving function variable (<https://github.com/openvinotoolkit/cvat/pull/2860>)
 - Shortcuts with CAPSLOCK enabled and with non-US languages activated (<https://github.com/openvinotoolkit/cvat/pull/2872>)
+- Fixed label editor name field validator (<https://github.com/openvinotoolkit/cvat/pull/2879>)
 
 ### Security
 
diff --git a/cvat-ui/src/components/labels-editor/label-form.tsx b/cvat-ui/src/components/labels-editor/label-form.tsx
index c0f78329a53c37143349b0f7a24003ba525aa0a4..23f16c962c68a6bff44ebbc265446d0eb83bf24f 100644
--- a/cvat-ui/src/components/labels-editor/label-form.tsx
+++ b/cvat-ui/src/components/labels-editor/label-form.tsx
@@ -390,10 +390,11 @@ export default class LabelForm extends React.Component<Props> {
                         message: patterns.validateAttributeName.message,
                     },
                     {
-                        validator: async (_rule: any, labelName: string, callback: Function) => {
+                        validator: (_rule: any, labelName: string) => {
                             if (labelNames && labelNames.includes(labelName)) {
-                                callback('Label name must be unique for the task');
+                                return Promise.reject(new Error('Label name must be unique for the task'));
                             }
+                            return Promise.resolve();
                         },
                     },
                 ]}
@@ -522,7 +523,7 @@ export default class LabelForm extends React.Component<Props> {
     public render(): JSX.Element {
         return (
             <Form onFinish={this.handleSubmit} layout='vertical' ref={this.formRef}>
-                <Row justify='start' align='middle'>
+                <Row justify='start' align='top'>
                     <Col span={10}>{this.renderLabelNameInput()}</Col>
                     <Col span={3} offset={1}>
                         {this.renderChangeColorButton()}
@@ -531,7 +532,7 @@ export default class LabelForm extends React.Component<Props> {
                         {this.renderNewAttributeButton()}
                     </Col>
                 </Row>
-                <Row justify='start' align='middle'>
+                <Row justify='start' align='top'>
                     <Col span={24}>
                         <Form.List name='attributes'>{this.renderAttributes()}</Form.List>
                     </Col>
diff --git a/tests/cypress/integration/actions_tasks_objects/case_43_create_label_with_existing_label_name.js b/tests/cypress/integration/actions_tasks_objects/case_43_create_label_with_existing_label_name.js
index 198f77889868a9d2db19ac053b9b1268a1c65888..796e41d1a57b6e0348628056addfb8f157ec5de6 100644
--- a/tests/cypress/integration/actions_tasks_objects/case_43_create_label_with_existing_label_name.js
+++ b/tests/cypress/integration/actions_tasks_objects/case_43_create_label_with_existing_label_name.js
@@ -24,11 +24,10 @@ context('Creating a label with existing label name.', () => {
                     // Try to create a label with existing label name
                     cy.get('.cvat-constructor-viewer-new-item').click();
                     cy.get('[placeholder="Label name"]').type(firstLabelName);
-                    cy.contains('[type="submit"]', 'Done').click();
+                    cy.contains('[role="alert"]', 'Label name must be unique for the task') // Checking alert visibility
+                        .should('exist')
+                        .and('be.visible');
                 });
-            cy.get('.cvat-notification-notice-update-task-failed')
-                .should('exist')
-                .and('contain.text', 'label names must be unique');
         });
     });
 });