diff --git a/render/hyperscript.js b/render/hyperscript.js
index cd326056..51182f12 100644
--- a/render/hyperscript.js
+++ b/render/hyperscript.js
@@ -5,6 +5,10 @@ var Vnode = require("../render/vnode")
 var selectorParser = /(?:(^|#|\.)([^#\.\[\]]+))|(\[(.+?)(?:\s*=\s*("|'|)((?:\\["'\]]|.)*?)\5)?\])/g
 var selectorCache = {}
 function hyperscript(selector) {
+	if (selector == null || typeof selector !== "string" && !selector.view) {
+		throw Error("The selector must be either a string or a component.");
+	}
+
 	if (typeof selector === "string") {
 		if (selectorCache[selector] === undefined) {
 			var match, tag, classes = [], attributes = {}