diff --git a/src/004-base/proxies.js b/src/004-base/proxies.js
index e271aa87d62bcb6d30f0f25ed1fc674a65537614..0b39cd557d8bc07c7f9760ab3fb070c1c9904abe 100644
--- a/src/004-base/proxies.js
+++ b/src/004-base/proxies.js
@@ -1,4 +1,5 @@
 window.createReadonlyProxy = function(target) {
+	if (target == null) return target; //intentionally ==
 	if (target.__isReadonlyProxy) { return target; }
 	if (_.isArray(target)) {
 		return new Proxy(target, {
@@ -39,6 +40,7 @@ window.createReadonlyProxy = function(target) {
 	return target;
 };
 window.createCheatProxy = function(target) {
+	if (target == null) return target; //intentionally ==
 	if (target.__isCheatProxy) { return target; }
 	if (_.isArray(target)) {
 		return new Proxy(target, {