diff --git a/hgext/remotefilelog/debugcommands.py b/hgext/remotefilelog/debugcommands.py
--- a/hgext/remotefilelog/debugcommands.py
+++ b/hgext/remotefilelog/debugcommands.py
@@ -276,7 +276,7 @@
                 totalblobsize += blobsize
             else:
                 blobsize = "(missing)"
-            ui.write("%s  %s  %s%d\n" % (
+            ui.write("%s  %s  %s%s\n" % (
                 hashformatter(node),
                 hashformatter(deltabase),
                 ('%d' % deltalen).ljust(14),