--- a/dwt/internal/cocoa/NSData.d	Tue Dec 09 21:52:21 2008 +0100
+++ b/dwt/internal/cocoa/NSData.d	Mon Dec 22 15:10:19 2008 +0100
@@ -38,7 +38,7 @@
     return cast(/*const*/void*) OS.objc_msgSend(this.id, OS.sel_bytes);
 }
 
-public static NSData dataWithBytes(/*const*/void*, NSUInteger length) {
+public static NSData dataWithBytes(/*const*/void* bytes, NSUInteger length) {
     objc.id result = OS.objc_msgSend(OS.class_NSData, OS.sel_dataWithBytes_length_, bytes, length);
     return result !is null ? new NSData(result) : null;
 }
@@ -52,7 +52,7 @@
 }
 
 public NSUInteger length() {
-    return OS.objc_msgSend(this.id, OS.sel_length);
+    return cast(NSUInteger) OS.objc_msgSend(this.id, OS.sel_length);
 }
 
 }