diff --git a/html/js/app.js b/html/js/app.js
index eb98fef..a9913c7 100644
--- a/html/js/app.js
+++ b/html/js/app.js
@@ -27,14 +27,20 @@ function toggleLang() {
     currentLang = currentLang === 'en' ? 'ru' : 'en';
     const t = translations[currentLang];
 
-    document.getElementById('title').textContent = t.title;
-    document.getElementById('desc').textContent = t.desc;
-    document.getElementById('button').textContent = t.button;
-    document.getElementById('aboutTitle').textContent = t.aboutTitle;
-    document.getElementById('aboutText').textContent = t.aboutText;
-    document.getElementById('projectsTitle').textContent = t.projectsTitle;
-    document.getElementById('contactTitle').textContent = t.contactTitle;
-    document.getElementById('contactText').textContent = t.contactText;
+    tryToggleTextContent('title', t.title);
+    tryToggleTextContent('desc', t.desc);
+    tryToggleTextContent('button', t.button);
+    tryToggleTextContent('aboutTitle', t.aboutTitle);
+    tryToggleTextContent('aboutText', t.aboutText);
+    tryToggleTextContent('projectsTitle', t.projectsTitle);
+    tryToggleTextContent('contactTitle', t.contactTitle);
+    tryToggleTextContent('contactText', t.contactText);
+}
+
+function tryToggleTextContent(elementId, textContent) {
+    let el = document.getElementById(elementId);
+    if (el != null)
+        el.textContent = textContent;
 }
 
 // Background animation