diff --git a/mercurial/commands.py b/mercurial/commands.py
index 1703a7f9d5b8e4a04a76eec60a5c140b8c613222_bWVyY3VyaWFsL2NvbW1hbmRzLnB5..4db5671d57d9946df0570c110b655d5a07055960_bWVyY3VyaWFsL2NvbW1hbmRzLnB5 100644
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -2351,7 +2351,7 @@
     ]
     + walkopts
     + dryrunopts,
-    _(b'[OPTION]... SOURCE... DEST'),
+    _(b'[OPTION]... (SOURCE... DEST | --forget DEST...)'),
     helpcategory=command.CATEGORY_FILE_CONTENTS,
 )
 def copy(ui, repo, *pats, **opts):