diff --git a/src/Avalonia.Native.OSX/window.mm b/src/Avalonia.Native.OSX/window.mm
index 0e745fdf8a..315bb94ee1 100644
--- a/src/Avalonia.Native.OSX/window.mm
+++ b/src/Avalonia.Native.OSX/window.mm
@@ -572,7 +572,7 @@ NSArray* AllLoopModes = [NSArray arrayWithObjects: NSDefaultRunLoopMode, NSEvent
     
 }
 
-- (NSArray<NSAttributedStringKey> *)validAttributesForMarkedText
+- (NSArray<NSString *> *)validAttributesForMarkedText
 {
     return [NSArray new];
 }