diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 2f089cca..0f6c35a5 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -380,7 +380,7 @@ D-ObjDump:
 DM:
   type: programming
   color: "#075ff1"
-  lexer: Text only
+  lexer: C++
   primary_extension: .dm
   aliases:
   - byond