diff --git a/mercurial/commands.py b/mercurial/commands.py
--- a/mercurial/commands.py
+++ b/mercurial/commands.py
@@ -1863,11 +1863,6 @@ def copy(ui, repo, *pats, **opts):
     with repo.wlock(False):
         return cmdutil.copy(ui, repo, pats, opts)
 
-@command('debuglabelcomplete', [], _('LABEL...'))
-def debuglabelcomplete(ui, repo, *args):
-    '''backwards compatibility with old bash completion scripts (DEPRECATED)'''
-    debugnamecomplete(ui, repo, *args)
-
 @command('debugmergestate', [], '')
 def debugmergestate(ui, repo, *args):
     """print merge state
diff --git a/mercurial/debugcommands.py b/mercurial/debugcommands.py
--- a/mercurial/debugcommands.py
+++ b/mercurial/debugcommands.py
@@ -1036,6 +1036,11 @@ def debugknown(ui, repopath, *ids, **opt
     flags = repo.known([bin(s) for s in ids])
     ui.write("%s\n" % ("".join([f and "1" or "0" for f in flags])))
 
+@command('debuglabelcomplete', [], _('LABEL...'))
+def debuglabelcomplete(ui, repo, *args):
+    '''backwards compatibility with old bash completion scripts (DEPRECATED)'''
+    commands.debugnamecomplete(ui, repo, *args)
+
 @command('debugupgraderepo', [
     ('o', 'optimize', [], _('extra optimization to perform'), _('NAME')),
     ('', 'run', False, _('performs an upgrade')),