diff --git a/package.json b/package.json
index 60f688e..9713722 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
   "bundlesize": [
     {
       "path": "full/preact.js",
-      "maxSize": "760b"
+      "maxSize": "780b"
     },
     {
       "path": "dist/unistore.js",
diff --git a/src/index.js b/src/index.js
index 4df2006..a58ef77 100644
--- a/src/index.js
+++ b/src/index.js
@@ -55,8 +55,10 @@ export default function createStore(state) {
 
 			// Note: perf tests verifying this implementation: https://esbench.com/bench/5a295e6299634800a0349500
 			return function() {
-				let args = [state];
-				for (let i=0; i<arguments.length; i++) args.push(arguments[i]);
+				let i = arguments.length,
+					args = Array(arguments.length + 1);
+				args[0] = state;
+				while (i) args[i--] = arguments[i];
 				let ret = action.apply(this, args);
 				if (ret!=null) {
 					if (ret.then) return ret.then(apply);