diff --git a/src/language/LanguageManager.js b/src/language/LanguageManager.js
index b3c222800dc..e88b100babd 100644
--- a/src/language/LanguageManager.js
+++ b/src/language/LanguageManager.js
@@ -1161,6 +1161,10 @@ define(function (require, exports, module) {
         var scss = getLanguage("scss");
         scss._setLanguageForMode("css", scss);
 
+        // Map stylus mode to the stylus Brackets language, fixes #13378
+        var stylus = getLanguage("stylus");
+        _setLanguageForMode("stylus", stylus);
+
         // The fallback language for unknown modes and file extensions
         _fallbackLanguage = getLanguage("unknown");