Index: subversion/libsvn_client/diff.c
===================================================================
--- subversion/libsvn_client/diff.c	(revision 1871354)
+++ subversion/libsvn_client/diff.c	(working copy)
@@ -1187,7 +1187,7 @@ diff_file_added(const char *relpath,
         index_path = svn_dirent_join(dwi->ddi.anchor, relpath,
                                      scratch_pool);
 
-      SVN_ERR(print_diff_index_header(dwi->outstream, dwi->header_encoding,
+      SVN_ERR(print_diff_index_header(dwi->errstream, dwi->header_encoding,
                                       index_path, " (added)",
                                       scratch_pool));
       wrote_header = TRUE;
@@ -1275,7 +1275,7 @@ diff_file_deleted(const char *relpath,
         index_path = svn_dirent_join(dwi->ddi.anchor, relpath,
                                      scratch_pool);
 
-      SVN_ERR(print_diff_index_header(dwi->outstream, dwi->header_encoding,
+      SVN_ERR(print_diff_index_header(dwi->errstream, dwi->header_encoding,
                                       index_path, " (deleted)",
                                       scratch_pool));
     }