diff --git a/src/mono/wasm/runtime/library_mono.js b/src/mono/wasm/runtime/library_mono.js
index 6c5dbe5e0d0d45..c9426c7c3970a6 100644
--- a/src/mono/wasm/runtime/library_mono.js
+++ b/src/mono/wasm/runtime/library_mono.js
@@ -699,6 +699,11 @@ var MonoSupportLib = {
 		_create_proxy_from_object_id: function (objectId, details) {
 			if (objectId.startsWith ('dotnet:array:'))
 			{
+				if (details.items === undefined)
+				{
+					const ret = details.map (p => p.value);
+					return ret;
+				}
 				if (details.dimensionsDetails == undefined || details.dimensionsDetails.length == 1)
 				{
 					const ret = details.items.map (p => p.value);