diff --git a/gnu/usr.bin/diff/diff.1 b/gnu/usr.bin/diff/diff.1
index f04d90f93498..5597347a01b9 100644
--- a/gnu/usr.bin/diff/diff.1
+++ b/gnu/usr.bin/diff/diff.1
@@ -494,7 +494,7 @@ tree (possibly including new files), which you would like to show to others
 .B send-pr(1)
 program), you could type
 .sp
-diff -crN foo.orig foo >foo.diff
+diff -urN foo.orig foo >foo.diff
 .sp
 where
 .I foo.orig