diff --git a/Headers/AppKit/NSDataLink.h b/Headers/AppKit/NSDataLink.h
index ebecd3864..c1ac39e7a 100644
--- a/Headers/AppKit/NSDataLink.h
+++ b/Headers/AppKit/NSDataLink.h
@@ -92,6 +92,7 @@ APPKIT_EXPORT NSString *NSDataLinkFileNameExtension;
     unsigned   isDirty:1;
     unsigned   willOpenSource:1;
     unsigned   willUpdate:1;
+    unsigned   isMarker:1;
   } _flags;
 }
 
diff --git a/Source/NSDataLinkManager.m b/Source/NSDataLinkManager.m
index 99436c729..a56937b11 100644
--- a/Source/NSDataLinkManager.m
+++ b/Source/NSDataLinkManager.m
@@ -80,6 +80,11 @@
 {
   ASSIGN(destinationSelection,dst);
 }
+
+- (void) setIsMarker: (BOOL)flag
+{
+  _flags.isMarker = flag;
+}
 @end
 
 
@@ -161,7 +166,7 @@
 - (BOOL)addLinkAsMarker:(NSDataLink *)link
 		     at:(NSSelection *)selection
 {
-  // FIXME: Marker?
+  [link setIsMarker: YES];
   return [self addLink: link at: selection];
 }