diff --git a/src/core/Class.js b/src/core/Class.js
index 9c3635cf..c9f713b5 100644
--- a/src/core/Class.js
+++ b/src/core/Class.js
@@ -16,7 +16,7 @@ L.Class.extend = function (props) {
 		}
 
 		// call all constructor hooks
-		if (this._initHooks) {
+		if (this._initHooks.length) {
 			this.callInitHooks();
 		}
 	};