diff --git a/changelog.d/20250217_135531_abdul.rehman02_fix_dark_theme_legacy_pages.md b/changelog.d/20250217_135531_abdul.rehman02_fix_dark_theme_legacy_pages.md
new file mode 100644
index 000000000..aae795022
--- /dev/null
+++ b/changelog.d/20250217_135531_abdul.rehman02_fix_dark_theme_legacy_pages.md
@@ -0,0 +1 @@
+- [Bugfix] Fixed breaking dark theme toggle not working in legacy pages. (by @rehmansheikh222) 
\ No newline at end of file
diff --git a/tutorindigo/templates/indigo/lms/static/js/dark-theme.js b/tutorindigo/templates/indigo/lms/static/js/dark-theme.js
index 93b4d47cc..99687b51c 100644
--- a/tutorindigo/templates/indigo/lms/static/js/dark-theme.js
+++ b/tutorindigo/templates/indigo/lms/static/js/dark-theme.js
@@ -1,3 +1,11 @@
+(function() {
+  if (window.INDIGO_DARK_THEME_INITIALIZED) {
+    console.log("dark-theme.js: script already initialized, skipping second run.");
+    return;
+  }
+  window.INDIGO_DARK_THEME_INITIALIZED = true;
+  // ========== END GUARD CHECK ===============
+
 $(document).ready(function() {
     'use strict';
 
@@ -36,3 +44,4 @@ $(document).ready(function() {
 
     $('#toggle-switch').on('change', toggleTheme);
 });
+})();