diff --git a/src/hxp/HostPlatform.hx b/src/hxp/HostPlatform.hx
index 923260d..41ca00f 100644
--- a/src/hxp/HostPlatform.hx
+++ b/src/hxp/HostPlatform.hx
@@ -1,6 +1,6 @@
 package hxp;
 
-@:enum abstract HostPlatform(String) from String to String
+#if (haxe_ver < "4.0") @:enum #else enum #end abstract HostPlatform(String) from String to String
 {
 	public var WINDOWS = "windows";
 	public var MAC = "mac";