diff --git a/lib/linguist/generated.rb b/lib/linguist/generated.rb
index cb1d1106..ac4b1a99 100644
--- a/lib/linguist/generated.rb
+++ b/lib/linguist/generated.rb
@@ -222,7 +222,7 @@ module Linguist
     #
     # Returns true or false
     def generated_net_designer_file?
-      name.downcase =~ /\.designer\.cs$/
+      name.downcase =~ /\.designer\.(cs|vb)$/
     end
 
     # Internal: Is this a codegen file for Specflow feature file?
diff --git a/test/test_generated.rb b/test/test_generated.rb
index f82dfdf8..655cfb65 100644
--- a/test/test_generated.rb
+++ b/test/test_generated.rb
@@ -66,7 +66,10 @@ class TestGenerated < Minitest::Test
     generated_sample_without_loading_data("go/vendor/gopkg.in/some/nested/path/foo.go")
 
     # .NET designer file
-    generated_sample_without_loading_data("Dummu/foo.designer.cs")
+    generated_sample_without_loading_data("Dummy/foo.designer.cs")
+    generated_sample_without_loading_data("Dummy/foo.Designer.cs")
+    generated_sample_without_loading_data("Dummy/foo.designer.vb")
+    generated_sample_without_loading_data("Dummy/foo.Designer.vb")
 
     # Composer generated composer.lock file
     generated_sample_without_loading_data("JSON/composer.lock")