diff --git a/lib/Util/Cache.js b/lib/Util/Cache.js
index 61c13b8e3..24ba54a9f 100644
--- a/lib/Util/Cache.js
+++ b/lib/Util/Cache.js
@@ -59,8 +59,8 @@ var Cache = (function (_Array) {
 		return null;
 	};
 
-	Cache.prototype.has = function has(object) {
-		return !!this.get(this[discrimS], object[this[discrimS]]);
+	Cache.prototype.has = function has(key, value) {
+		return !!this.get(key, value);
 	};
 
 	Cache.prototype.getAll = function getAll(key, value) {
diff --git a/src/Util/Cache.js b/src/Util/Cache.js
index 9cbf6dc91..d1d78dd5a 100644
--- a/src/Util/Cache.js
+++ b/src/Util/Cache.js
@@ -36,8 +36,8 @@ export default class Cache extends Array {
 		return null;
 	}
 
-	has(object) {
-		return !!this.get(this[discrimS], object[this[discrimS]]);
+	has(key, value) {
+		return !!this.get(key, value);
 	}
 
 	getAll(key, value) {