Index: mcs/class/corlib/Test/Mono/MonoNativePlatformType.cs
--- mcs/class/corlib/Test/Mono/MonoNativePlatformType.cs.orig
+++ mcs/class/corlib/Test/Mono/MonoNativePlatformType.cs
@@ -40,6 +40,7 @@ namespace Mono
 		MONO_NATIVE_PLATFORM_TYPE_FREEBSD	= 6,
 		MONO_NATIVE_PLATFORM_TYPE_HAIKU		= 7,
 		MONO_NATIVE_PLATFORM_TYPE_NETBSD	= 8,
+		MONO_NATIVE_PLATFORM_TYPE_OPENBSD	= 9,
 
 		MONO_NATIVE_PLATFORM_TYPE_IPHONE	= 0x100,
 		MONO_NATIVE_PLATFORM_TYPE_TV		= 0x200,
