diff --git a/packages/ckeditor5/dist/browser/index.js b/packages/ckeditor5/dist/browser/index.js
index 9d8b9c31d..34df5609a 100644
--- a/packages/ckeditor5/dist/browser/index.js
+++ b/packages/ckeditor5/dist/browser/index.js
@@ -10999,8 +10999,7 @@ delete Array.prototype.__class__; // @codingStandardsIgnoreEnd
         const languageObject = this.editorObject.config.get("language");
         if (languageObject != null) {
             if (typeof languageObject === "object") {
-                // eslint-disable-next-line no-prototype-builtins
-                if (languageObject.hasOwnProperty("ui")) {
+               if (Object.prototype.hasOwnProperty.call(languageObject, "ui")) {
                     return languageObject.ui;
                 }
                 return languageObject;
diff --git a/packages/ckeditor5/dist/browser/index.umd.js b/packages/ckeditor5/dist/browser/index.umd.js
index cc88c47b5..dcdcd3cae 100644
--- a/packages/ckeditor5/dist/browser/index.umd.js
+++ b/packages/ckeditor5/dist/browser/index.umd.js
@@ -11001,8 +11001,7 @@
           const languageObject = this.editorObject.config.get("language");
           if (languageObject != null) {
               if (typeof languageObject === "object") {
-                  // eslint-disable-next-line no-prototype-builtins
-                  if (languageObject.hasOwnProperty("ui")) {
+                 if (Object.prototype.hasOwnProperty.call(languageObject, "ui")) {
                       return languageObject.ui;
                   }
                   return languageObject;
diff --git a/packages/ckeditor5/dist/index.js b/packages/ckeditor5/dist/index.js
index 4da333dcc..e83e797a2 100644
--- a/packages/ckeditor5/dist/index.js
+++ b/packages/ckeditor5/dist/index.js
@@ -46,8 +46,7 @@ import Telemeter from '@wiris/mathtype-html-integration-devkit/src/telemeter.js'
         const languageObject = this.editorObject.config.get("language");
         if (languageObject != null) {
             if (typeof languageObject === "object") {
-                // eslint-disable-next-line no-prototype-builtins
-                if (languageObject.hasOwnProperty("ui")) {
+                if (Object.prototype.hasOwnProperty.call(languageObject, "ui")) {
                     return languageObject.ui;
                 }
                 return languageObject;
diff --git a/packages/ckeditor5/src/integration.js b/packages/ckeditor5/src/integration.js
index 11ebf0e1d..eac8d4a2f 100644
--- a/packages/ckeditor5/src/integration.js
+++ b/packages/ckeditor5/src/integration.js
@@ -43,8 +43,7 @@ export default class CKEditor5Integration extends IntegrationModel {
     const languageObject = this.editorObject.config.get("language");
     if (languageObject != null) {
       if (typeof languageObject === "object") {
-        // eslint-disable-next-line no-prototype-builtins
-        if (languageObject.hasOwnProperty("ui")) {
+        if (Object.prototype.hasOwnProperty.call(languageObject, "ui")) {
           return languageObject.ui;
         }
         return languageObject;