diff --git a/reflections/shape/shape-test.js b/reflections/shape/shape-test.js
index f50214d..d4a08f1 100644
--- a/reflections/shape/shape-test.js
+++ b/reflections/shape/shape-test.js
@@ -540,6 +540,10 @@ QUnit.test("hasKey", function() {
 
 	objHasOwnKey.bar = "baz";
 	QUnit.ok(shapeReflections.hasKey(objHasOwnKey, "bar") , "returns true when hasOwnKey Symbol returns false but `in` returns true");
+
+	QUnit.ok(shapeReflections.hasKey(55, "toFixed") , "works on primitives");
+	QUnit.ok(shapeReflections.hasKey(true, "valueOf") , "works on primitives");
+	QUnit.ok(shapeReflections.hasKey('foo', "length") , "works on primitives");
 });
 
 QUnit.test("serialize clones", function(){
diff --git a/reflections/shape/shape.js b/reflections/shape/shape.js
index d971bc3..8e054f6 100644
--- a/reflections/shape/shape.js
+++ b/reflections/shape/shape.js
@@ -983,6 +983,14 @@ shapeReflections = {
 	 * @return {Boolean} `true` if `obj`'s key set contains `key` or an object on its prototype chain's key set contains `key`, `false` otherwise
 	 */
 	"hasKey": function(obj, key) {
+		if (typeReflections.isPrimitive(obj)) {
+			if (Object.prototype.hasOwnProperty.call(obj, key)) {
+				return true;
+			} else {
+				return key in Object.getPrototypeOf(obj);
+			}
+		}
+
 		var hasKey = obj[canSymbol.for("can.hasKey")];
 		if(hasKey) {
 			return hasKey.call(obj, key);