diff --git a/hgext/rebase.py b/hgext/rebase.py
--- a/hgext/rebase.py
+++ b/hgext/rebase.py
@@ -73,20 +73,6 @@ command = registrar.command(cmdtable)
 # leave the attribute unspecified.
 testedwith = 'ships-with-hg-core'
 
-configtable = {}
-configitem = registrar.configitem(configtable)
-
-configitem('commands', 'rebase.requiredest',
-            default=False,
-)
-
-configitem('experimental', 'rebaseskipobsolete',
-    default=True,
-)
-configitem('rebase', 'singletransaction',
-    default=False,
-)
-
 def _nothingtorebase():
     return 1
 
diff --git a/mercurial/configitems.py b/mercurial/configitems.py
--- a/mercurial/configitems.py
+++ b/mercurial/configitems.py
@@ -1085,3 +1085,16 @@ coreconfigitem('worker', 'backgroundclos
 coreconfigitem('worker', 'numcpus',
     default=None,
 )
+
+# Rebase related configuration moved to core because other extension are doing
+# strange things. For example, shelve import the extensions to reuse some bit
+# without formally loading it.
+coreconfigitem('commands', 'rebase.requiredest',
+            default=False,
+)
+coreconfigitem('experimental', 'rebaseskipobsolete',
+    default=True,
+)
+coreconfigitem('rebase', 'singletransaction',
+    default=False,
+)