diff --git a/src/Avalonia.Base/Media/Transformation/TransformParser.cs b/src/Avalonia.Base/Media/Transformation/TransformParser.cs
index 85f4f5fec1..cfbc5b23c4 100644
--- a/src/Avalonia.Base/Media/Transformation/TransformParser.cs
+++ b/src/Avalonia.Base/Media/Transformation/TransformParser.cs
@@ -4,7 +4,7 @@ using Avalonia.Utilities;
 
 namespace Avalonia.Media.Transformation
 {
-    public static class TransformParser
+    internal static class TransformParser
     {
         private static readonly (string, TransformFunction)[] s_functionMapping =
         {