diff --git a/src/mobilecoreservices.cs b/src/mobilecoreservices.cs
index b9b6411ba7f8..f49817bff46e 100644
--- a/src/mobilecoreservices.cs
+++ b/src/mobilecoreservices.cs
@@ -517,7 +517,7 @@ interface UTType {
 		NSString UniversalSceneDescription { get; }
 
 		[NoWatch]
-		[iOS (15,0), Mac(12,0), TV (15,0)]
+		[iOS (15,0), Mac(12,0), TV (15,0), MacCatalyst (15,0)]
 		[Field ("kUTTypeUniversalSceneDescriptionMobile", "ModelIO")]
 		NSString UniversalSceneDescriptionMobile { get; }
 
diff --git a/src/modelio.cs b/src/modelio.cs
index 1f1f0abd3663..52e9d89adcdd 100644
--- a/src/modelio.cs
+++ b/src/modelio.cs
@@ -227,10 +227,10 @@ NVector3 UpAxis {
 		[Export ("objectAtIndex:")]
 		MDLObject GetObject (nuint index);
 
-		[Deprecated (PlatformName.iOS, 15, 0, message: "Use the 'Originals' instead.")]
-		[Deprecated (PlatformName.TvOS, 15, 0, message: "Use the 'Originals' instead.")]
-		[Deprecated (PlatformName.MacOSX, 12, 0, message: "Use the 'Originals' instead.")]
-		[Deprecated (PlatformName.MacCatalyst, 15, 0, message: "Use the 'Originals' instead.")]
+		[Deprecated (PlatformName.iOS, 15, 0, message: "Use the 'Originals' property instead.")]
+		[Deprecated (PlatformName.TvOS, 15, 0, message: "Use the 'Originals' property instead.")]
+		[Deprecated (PlatformName.MacOSX, 12, 0, message: "Use the 'Originals' property instead.")]
+		[Deprecated (PlatformName.MacCatalyst, 15, 0, message: "Use the 'Originals' property instead.")]
 		[iOS (10,0)]
 		[Mac (10,12)]
 		[TV (10,0)]