diff --git a/src/core/Base.js b/src/core/Base.js
index 6f716cd8..8aed4cbd 100644
--- a/src/core/Base.js
+++ b/src/core/Base.js
@@ -69,7 +69,7 @@ Base.inject(/** @lends Base# */{
             var orig = props._filtering || props;
             for (var key in orig) {
                 if (key in this && orig.hasOwnProperty(key)
-                        && (!exclude || !exclude[key])) {
+                        && !(exclude && exclude[key])) {
                     var value = props[key];
                     // Due to the _filtered inheritance trick, undefined is used
                     // to mask already consumed named arguments.
diff --git a/src/core/Emitter.js b/src/core/Emitter.js
index e1588903..ecdc78be 100644
--- a/src/core/Emitter.js
+++ b/src/core/Emitter.js
@@ -76,12 +76,11 @@ var Emitter = {
         var handlers = this._callbacks && this._callbacks[type];
         if (!handlers)
             return false;
-        var args = [].slice.call(arguments, 1),
-            that = this;
+        var args = [].slice.call(arguments, 1);
         for (var i = 0, l = handlers.length; i < l; i++) {
             // When the handler function returns false, prevent the default
             // behaviour and stop propagation of the event by calling stop()
-            if (handlers[i].apply(that, args) === false
+            if (handlers[i].apply(this, args) === false
                     && event && event.stop) {
                 event.stop();
                 break;