diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 203ae442..0a658e4e 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1791,7 +1791,6 @@ XML:
   - .tmSnippet
   - .tmTheme
   - .tml
-  - .ts
   - .ui
   - .urdf
   - .vxml
diff --git a/test/test_heuristics.rb b/test/test_heuristics.rb
index a7847173..75a559cd 100644
--- a/test/test_heuristics.rb
+++ b/test/test_heuristics.rb
@@ -50,4 +50,16 @@ class TestHeuristcs < Test::Unit::TestCase
     results = Heuristics.disambiguate_pl(fixture("Perl/perl-test.t"), languages)
     assert_equal Language["Perl"], results.first
   end
+
+  def test_ts_typescript_by_heuristics
+    languages = ["TypeScript", "XML"]
+    results = Heuristics.disambiguate_pl(fixture("TypeScript/class.ts"), languages)
+    assert_equal Language["TypeScript"], results.first
+  end
+
+  def test_ts_xml_by_heuristics
+    languages = ["TypeScript", "XML"]
+    results = Heuristics.disambiguate_pl(fixture("XML/pt_BR.ts"), languages)
+    assert_equal Language["XML"], results.first
+  end
 end