diff --git a/Foundation/CPProxy.j b/Foundation/CPProxy.j
index 2234a6f39..9a4c229bc 100644
--- a/Foundation/CPProxy.j
+++ b/Foundation/CPProxy.j
@@ -48,7 +48,7 @@
     return class_createInstance(self);
 }
 
-+ (BOOL)respondsToSelector:(SEL)selector
++ (BOOL)respondsToSelector:(SEL)aSelector
 {
     return !!class_getInstanceMethod(isa, aSelector);
 }