diff --git a/assets/js/keyboard-shortcuts.js b/assets/js/keyboard-shortcuts.js
index 9c1ccc9..9e1e037 100644
--- a/assets/js/keyboard-shortcuts.js
+++ b/assets/js/keyboard-shortcuts.js
@@ -78,6 +78,8 @@ function showKeyboardHelp() {
 }
 
 document.addEventListener('DOMContentLoaded', function() {
+    if (!window.lt) return;
+
     // Ctrl+E: Toggle edit mode (ticket pages)
     lt.keys.on('ctrl+e', function() {
         const editButton = document.getElementById('editButton');
diff --git a/assets/js/settings.js b/assets/js/settings.js
index 7038a9f..58aeec2 100644
--- a/assets/js/settings.js
+++ b/assets/js/settings.js
@@ -131,4 +131,6 @@ document.addEventListener('keydown', (e) => {
 });
 
 // Initialize on page load
-document.addEventListener('DOMContentLoaded', loadUserPreferences);
+document.addEventListener('DOMContentLoaded', function() {
+    if (window.lt) loadUserPreferences();
+});
diff --git a/views/DashboardView.php b/views/DashboardView.php
index 9a28962..645a7b5 100644
--- a/views/DashboardView.php
+++ b/views/DashboardView.php
@@ -854,7 +854,7 @@ $nonce = SecurityHeadersMiddleware::getNonce();
     <script nonce="<?php echo $nonce; ?>" src="<?php echo $GLOBALS['config']['ASSETS_URL']; ?>/js/advanced-search.js"></script>
     <script nonce="<?php echo $nonce; ?>">
         // Initialize lt keyboard defaults (ESC closes modals, Ctrl+K focuses search, ? shows help)
-        lt.keys.initDefaults();
+        if (window.lt) lt.keys.initDefaults();
         // Event delegation for all data-action handlers
         document.addEventListener('click', function(event) {
             const target = event.target.closest('[data-action]');
diff --git a/views/TicketView.php b/views/TicketView.php
index f0a5d38..53a348b 100644
--- a/views/TicketView.php
+++ b/views/TicketView.php
@@ -816,6 +816,6 @@ $nonce = SecurityHeadersMiddleware::getNonce();
 
     <script nonce="<?php echo $nonce; ?>" src="<?php echo $GLOBALS['config']['ASSETS_URL']; ?>/js/keyboard-shortcuts.js"></script>
     <script nonce="<?php echo $nonce; ?>" src="<?php echo $GLOBALS['config']['ASSETS_URL']; ?>/js/settings.js"></script>
-    <script nonce="<?php echo $nonce; ?>">lt.keys.initDefaults();</script>
+    <script nonce="<?php echo $nonce; ?>">if (window.lt) lt.keys.initDefaults();</script>
 </body>
 </html>
\ No newline at end of file
diff --git a/views/admin/CustomFieldsView.php b/views/admin/CustomFieldsView.php
index 2286305..2c15266 100644
--- a/views/admin/CustomFieldsView.php
+++ b/views/admin/CustomFieldsView.php
@@ -204,7 +204,7 @@ $nonce = SecurityHeadersMiddleware::getNonce();
             saveField(e);
         });
 
-        lt.keys.initDefaults();
+        if (window.lt) lt.keys.initDefaults();
 
         function toggleOptionsField() {
             const type = document.getElementById('field_type').value;
diff --git a/views/admin/RecurringTicketsView.php b/views/admin/RecurringTicketsView.php
index 406f4ae..525d50e 100644
--- a/views/admin/RecurringTicketsView.php
+++ b/views/admin/RecurringTicketsView.php
@@ -241,7 +241,7 @@ $nonce = SecurityHeadersMiddleware::getNonce();
             saveRecurring(e);
         });
 
-        lt.keys.initDefaults();
+        if (window.lt) lt.keys.initDefaults();
 
         function updateScheduleOptions() {
             const type = document.getElementById('schedule_type').value;
diff --git a/views/admin/TemplatesView.php b/views/admin/TemplatesView.php
index 165fc32..0e14aa4 100644
--- a/views/admin/TemplatesView.php
+++ b/views/admin/TemplatesView.php
@@ -202,7 +202,7 @@ $nonce = SecurityHeadersMiddleware::getNonce();
             saveTemplate(e);
         });
 
-        lt.keys.initDefaults();
+        if (window.lt) lt.keys.initDefaults();
 
         function saveTemplate(e) {
             e.preventDefault();
diff --git a/views/admin/WorkflowDesignerView.php b/views/admin/WorkflowDesignerView.php
index e2720e9..a45a78b 100644
--- a/views/admin/WorkflowDesignerView.php
+++ b/views/admin/WorkflowDesignerView.php
@@ -219,7 +219,7 @@ $nonce = SecurityHeadersMiddleware::getNonce();
             saveTransition(e);
         });
 
-        lt.keys.initDefaults();
+        if (window.lt) lt.keys.initDefaults();
 
         function saveTransition(e) {
             e.preventDefault();