diff --git a/spec/stdlib/underscore-extensions-spec.coffee b/spec/stdlib/underscore-extensions-spec.coffee
index 2c2b1ceac..ee12f269e 100644
--- a/spec/stdlib/underscore-extensions-spec.coffee
+++ b/spec/stdlib/underscore-extensions-spec.coffee
@@ -8,13 +8,13 @@ describe "underscore extensions", ->
       calls = []
       object = {
         method: (args...) ->
-          calls.push(["original", args])
+          calls.push(["original", this, args])
       }
 
     it "calls the given function before the advised method", ->
-      _.adviseBefore object, 'method', (args...) -> calls.push(["advice", args])
+      _.adviseBefore object, 'method', (args...) -> calls.push(["advice", this, args])
       object.method(1, 2, 3)
-      expect(calls).toEqual [['advice', [1, 2, 3]], ['original', [1, 2, 3]]]
+      expect(calls).toEqual [['advice', object, [1, 2, 3]], ['original', object, [1, 2, 3]]]
 
     it "cancels the original method's invocation if the advice returns true", ->
       _.adviseBefore object, 'method', -> false
diff --git a/src/stdlib/underscore-extensions.coffee b/src/stdlib/underscore-extensions.coffee
index adbda8861..1fda906ee 100644
--- a/src/stdlib/underscore-extensions.coffee
+++ b/src/stdlib/underscore-extensions.coffee
@@ -13,8 +13,8 @@ _.mixin
   adviseBefore: (object, methodName, advice) ->
     original = object[methodName]
     object[methodName] = (args...) ->
-      unless advice(args...) == false
-        original(args...)
+      unless advice.apply(this, args) == false
+        original.apply(this, args)
 
   escapeRegExp: (string) ->
     # Referring to the table here: