diff --git a/mercurial/rcutil.py b/mercurial/rcutil.py
--- a/mercurial/rcutil.py
+++ b/mercurial/rcutil.py
@@ -61,12 +61,6 @@
     return result
 
 
-def defaultrcpath():
-    '''return rc paths in defaultrc'''
-    defaultpath = os.path.join(resourceutil.datapath, b'defaultrc')
-    return _expandrcpath(defaultpath)
-
-
 def default_rc_resources():
     """return rc resource IDs in defaultrc"""
     rsrcs = resourceutil.contents(b'mercurial.defaultrc')
@@ -107,7 +101,7 @@
         normpaths = lambda paths: [
             (b'path', os.path.normpath(p)) for p in paths
         ]
-        _rccomponents.extend(normpaths(defaultrcpath() + systemrcpath()))
+        _rccomponents.extend(normpaths(systemrcpath()))
         _rccomponents.append(envrc)
         _rccomponents.extend(normpaths(userrcpath()))
     return _rccomponents
diff --git a/tests/test-config-env.py b/tests/test-config-env.py
--- a/tests/test-config-env.py
+++ b/tests/test-config-env.py
@@ -36,7 +36,6 @@
     return [join(b'userrc')]
 
 
-extensions.wrapfunction(rcutil, 'defaultrcpath', lambda orig: [])
 extensions.wrapfunction(rcutil, 'default_rc_resources', lambda orig: [])
 
 rcutil.systemrcpath = systemrcpath