diff --git a/hscript/Async.hx b/hscript/Async.hx
index 669b50d..4ea58ab 100644
--- a/hscript/Async.hx
+++ b/hscript/Async.hx
@@ -414,6 +414,8 @@ class Async {
 			return toCps(v, mk(EFunction([ { name : "_c", t : null } ], mk(ESwitch(ident("_c",v), cases, def == null ? retNull(rest) : toCps(def, rest, exit)),e)),e), exit );
 		case EThrow(v):
 			return toCps(v, mk(EFunction([ { name : "_v", t : null } ], mk(EThrow(v),v)), v), exit);
+		case EMeta(name,_,e) if( name.charCodeAt(0) == ":".code ): // ignore custom ":" metadata
+			return toCps(e, rest, exit);
 		//case EDoWhile(_), ETry(_), ECall(_):
 		default:
 			throw "Unsupported async expression " + Printer.toString(e);