diff --git a/src/externalaccessory.cs b/src/externalaccessory.cs
index 282bc7bd881c..c3ab3baefad9 100644
--- a/src/externalaccessory.cs
+++ b/src/externalaccessory.cs
@@ -184,7 +184,7 @@ interface IEAWiFiUnconfiguredAccessoryBrowserDelegate {}
 #else
 	[BaseType (typeof (NSObject), Delegates=new string [] { "WeakDelegate" }, Events=new Type [] {typeof(EAWiFiUnconfiguredAccessoryBrowserDelegate)})]
 #endif
-#if XAMCORE_4_0
+#if NET
 	// There's a designated initializer, which leads to think that the default ctor
 	// should not be used (documentation says nothing).
 	[DisableDefaultCtor]