diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 7d89d65e..487ab648 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -711,6 +711,8 @@ DM:
 
 DTrace:
   type: programming
+  aliases:
+  - dtrace-script
   extensions:
   - .d
   interpreters:
diff --git a/samples/DTrace/javascript-trace.d b/samples/DTrace/javascript-trace.d
index 258c6cd2..0acbaa97 100644
--- a/samples/DTrace/javascript-trace.d
+++ b/samples/DTrace/javascript-trace.d
@@ -1,4 +1,4 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* -*- Mode: dtrace-script; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  *