diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 57777f64..d1348dc0 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -46,7 +46,7 @@ AMPL:
   color: "#00008B"
   extensions:
   - .ampl
-  tm_scope: none
+  tm_scope: source.ampl
   ace_mode: text
 
 ANTLR: