diff --git a/lib/box.js b/lib/box.js
index b71c985..27f1c72 100644
--- a/lib/box.js
+++ b/lib/box.js
@@ -50,11 +50,11 @@ Box.prototype.execute = function (app) {
         this.isSync
             ? this.done(this.fn.call(proxy, get))
             : this.fn.call(proxy, get, function (error, val) {
-                if (error) return app._raise(self.path, error)
+                if (error) return self.error(app, error)
                 self.done(val)
             })
     } catch (e) {
-        app._raise(this.path, e)
+        this.error(app, e)
     }
 }
 
@@ -68,6 +68,11 @@ Box.prototype.done = function (val) {
     this.callbacks = null
 }
 
+Box.prototype.error = function (app, err) {
+    this.callbacks = null
+    app._raise(this.path, err)
+}
+
 Box.prototype.onready = function (cb) {
     this.callbacks = this.callbacks || []
     this.callbacks.push(cb)