diff --git a/src/Avalonia.Controls/SystemFontAppBuilderExtension.cs b/src/Avalonia.Controls/SystemFontAppBuilderExtension.cs
index 056ebf13e8..2e9cb2bcbf 100644
--- a/src/Avalonia.Controls/SystemFontAppBuilderExtension.cs
+++ b/src/Avalonia.Controls/SystemFontAppBuilderExtension.cs
@@ -5,7 +5,7 @@ namespace Avalonia
 {
     public static class SystemFontAppBuilderExtension
     {
-        public static AppBuilder WithCustomSystemFont(this AppBuilder appBuilder, Uri fontSource)
+        public static AppBuilder WithSystemFontSource(this AppBuilder appBuilder, Uri fontSource)
         {
             return appBuilder.ConfigureFonts(fontManager =>
             {