diff --git a/mercurial/debugcommands.py b/mercurial/debugcommands.py
--- a/mercurial/debugcommands.py
+++ b/mercurial/debugcommands.py
@@ -3870,10 +3870,10 @@
         tagsnode = cache.getfnode(node, computemissing=False)
         if tagsnode:
             tagsnodedisplay = hex(tagsnode)
-        elif tagsnode is False:
+        elif tagsnode is None:
+            tagsnodedisplay = b'missing'
+        else:
             tagsnodedisplay = b'invalid'
-        else:
-            tagsnodedisplay = b'missing'
 
         ui.write(b'%d %s %s\n' % (r, hex(node), tagsnodedisplay))