diff --git a/grammars.yml b/grammars.yml
index 7e9b7053..e7d180be 100644
--- a/grammars.yml
+++ b/grammars.yml
@@ -422,6 +422,8 @@ https://github.com/wmertens/sublime-nix:
 - source.nix
 https://raw.githubusercontent.com/eregon/oz-tmbundle/master/Syntaxes/Oz.tmLanguage:
 - source.oz
+https://raw.githubusercontent.com/sebgod/mercury-tmlanguage/master/Mercury.tmLanguage:
+- source.mercury
 https://raw.githubusercontent.com/tenbits/sublime-mask/release/Syntaxes/mask.tmLanguage:
 - source.mask
 https://github.com/l15n/fish-tmbundle:
diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 86105d81..f7263d97 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1789,7 +1789,7 @@ Mercury:
   extensions:
   - .m
   - .moo
-  tm_scope: source.prolog
+  tm_scope: source.mercury
   ace_mode: prolog
 
 MiniD: # Legacy