diff --git a/packages/deps/deps.js b/packages/deps/deps.js
index 1abb9d2fab..e0e878758f 100644
--- a/packages/deps/deps.js
+++ b/packages/deps/deps.js
@@ -58,7 +58,7 @@ if (typeof Sky === "undefined") Sky = {};
         _.each(ctx._callbacks, function (f) {
           f(); // XXX wrap in try?
         });
-        delete this._callbacks; // maybe help the GC
+        delete ctx._callbacks; // maybe help the GC
       });
     },
 
@@ -66,4 +66,4 @@ if (typeof Sky === "undefined") Sky = {};
       Context: Context
     }
   });
-})();
\ No newline at end of file
+})();