diff --git a/ChangeLog b/ChangeLog
index ffa77ed95..7291af919 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2013-03-08  Fred Kiefer <FredKiefer@gmx.de>
+
+	* Headers/AppKit/NSTextView.h: Make NSTextViewDelegate a formal protocol.
+
 2013-03-08  Fred Kiefer <FredKiefer@gmx.de>
 
 	* configure.ac: Correct change for libpng.
diff --git a/Headers/AppKit/NSTextView.h b/Headers/AppKit/NSTextView.h
index 9d7df7d86..278d9467c 100644
--- a/Headers/AppKit/NSTextView.h
+++ b/Headers/AppKit/NSTextView.h
@@ -654,7 +654,13 @@ for that text view has been invalidated.
 layout manager. */
 
 #if OS_API_VERSION(GS_API_MACOSX, GS_API_LATEST)
+@protocol NSTextViewDelegate <NSObject>
+#ifdef __OBJC2__
+@optional
+#else
+@end
 @interface NSObject (NSTextViewDelegate)
+#endif
 
 -(void) textView: (NSTextView *)textView
    clickedOnCell: (id <NSTextAttachmentCell>)cell