diff --git a/packages/frptools/package.json b/packages/frptools/package.json
index 954595b..43ce239 100644
--- a/packages/frptools/package.json
+++ b/packages/frptools/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "frptools",
-	"version": "2.2.0",
+	"version": "2.2.1",
 	"description": "Observable Property and Computed data streams",
 	"main": "lib/index.js",
 	"jsnext:main": "src/index.js",
diff --git a/packages/frptools/src/container.js b/packages/frptools/src/container.js
index 7d5eef3..7f12944 100644
--- a/packages/frptools/src/container.js
+++ b/packages/frptools/src/container.js
@@ -14,11 +14,11 @@ export function container(store, hash) {
 	};
 	containerMethods._d = containerMethods.subscribe;
 
-	function checkUpdate() {
-		const newId = hash(store);
+	function checkUpdate(target) {
+		const newId = hash(target);
 		if (id !== newId) {
 			id = newId;
-			subscribers.forEach(s => s(store));
+			subscribers.forEach(s => s(target));
 		}
 	}
 
@@ -37,7 +37,7 @@ export function container(store, hash) {
 			if (typeof thing === 'function') {
 				return (...args) => {
 					const ret = target[name](...args);
-					checkUpdate();
+					checkUpdate(target);
 					return ret;
 				};
 			}
@@ -48,7 +48,7 @@ export function container(store, hash) {
 				throw new ReferenceError(`Cannot set ${name} in ${target}`);
 			}
 			target[name] = newVal;
-			checkUpdate();
+			checkUpdate(target);
 
 			return newVal;
 		}