diff --git a/src/metalperformanceshaders.cs b/src/metalperformanceshaders.cs
index 2c50184a44e9..be6bdbc2e191 100644
--- a/src/metalperformanceshaders.cs
+++ b/src/metalperformanceshaders.cs
@@ -1253,7 +1253,7 @@ interface MPSCnnLogSoftMax {
 	[iOS (10,0)][TV (10,0)][Mac (10, 13, onlyOn64: true)]
 	[BaseType (typeof (NSObject))]
 	[DisableDefaultCtor]
-	interface MPSImageDescriptor {
+	interface MPSImageDescriptor : NSCopying {
 
 		[Export ("width")]
 		nuint Width { get; set; }
@@ -3240,7 +3240,7 @@ interface IMPSCnnConvolutionDataSource { }
 	[TV (11,0), Mac (10, 13, onlyOn64: true), iOS (11,0)]
 	[Protocol, Model]
 	[BaseType (typeof (NSObject), Name = "MPSCNNConvolutionDataSource")]
-	interface MPSCnnConvolutionDataSource {
+	interface MPSCnnConvolutionDataSource : NSCopying {
 		[Abstract]
 		[Export ("dataType")]
 		MPSDataType DataType { get; }
diff --git a/tests/introspection/Mac/MacCoreImageFiltersTest.cs b/tests/introspection/Mac/MacCoreImageFiltersTest.cs
index badadf0e36fe..bf11dc23513b 100644
--- a/tests/introspection/Mac/MacCoreImageFiltersTest.cs
+++ b/tests/introspection/Mac/MacCoreImageFiltersTest.cs
@@ -33,6 +33,7 @@ public class MacCoreImageFiltersTest : ApiCoreImageFiltersTest
 		protected override bool Skip (string nativeName)
 		{
 			switch (nativeName) {
+			case "CISaliencyMapFilter": // Appears in 10.14 but not documented
 			case "CIEdgePreserveUpsampleFilter": // Appears in 10.13 but not documented
 			case "CIMaskedVariableBlur": // Appears removed in 10.11 but not documented
 				if (Mac.CheckSystemVersion (10, 11))