diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 2a5545bc..814bb14a 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -288,6 +288,7 @@ D-ObjDump:
 
 DOT:
   type: programming
+  lexer: Text only
   primary_extension: .dot
   extensions:
   - .gv