diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index b5062fd9..feaa1280 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -49,6 +49,7 @@ AMPL:
   - .dat
   - .mod
   - .run
+  tm_scope: none
   ace_mode: text
 
 ANTLR: