diff --git a/tests/test-demandimport.py b/tests/test-demandimport.py
--- a/tests/test-demandimport.py
+++ b/tests/test-demandimport.py
@@ -41,6 +41,17 @@
 del os.environ['HGDEMANDIMPORT']
 demandimport.enable()
 
+# Test access to special attributes through demandmod proxy
+from mercurial import error as errorproxy
+print("errorproxy =", f(errorproxy))
+print("errorproxy.__doc__ = %r"
+      % (' '.join(errorproxy.__doc__.split()[:3]) + ' ...'))
+print("errorproxy.__name__ = %r" % errorproxy.__name__)
+# __name__ must be accessible via __dict__ so the relative imports can be
+# resolved
+print("errorproxy.__dict__['__name__'] = %r" % errorproxy.__dict__['__name__'])
+print("errorproxy =", f(errorproxy))
+
 import os
 
 print("os =", f(os))
@@ -79,17 +90,6 @@
 print("re.stderr =", f(re.stderr))
 print("re =", f(re))
 
-# Test access to special attributes through demandmod proxy
-from mercurial import pvec as pvecproxy
-print("pvecproxy =", f(pvecproxy))
-print("pvecproxy.__doc__ = %r"
-      % (' '.join(pvecproxy.__doc__.split()[:3]) + ' ...'))
-print("pvecproxy.__name__ = %r" % pvecproxy.__name__)
-# __name__ must be accessible via __dict__ so the relative imports can be
-# resolved
-print("pvecproxy.__dict__['__name__'] = %r" % pvecproxy.__dict__['__name__'])
-print("pvecproxy =", f(pvecproxy))
-
 import contextlib
 print("contextlib =", f(contextlib))
 try:
diff --git a/tests/test-demandimport.py.out b/tests/test-demandimport.py.out
--- a/tests/test-demandimport.py.out
+++ b/tests/test-demandimport.py.out
@@ -1,4 +1,9 @@
 node = <module 'mercurial.node' from '?'>
+errorproxy = <unloaded module 'error'>
+errorproxy.__doc__ = 'Mercurial exceptions. This ...'
+errorproxy.__name__ = 'mercurial.error'
+errorproxy.__dict__['__name__'] = 'mercurial.error'
+errorproxy = <proxied module 'error'>
 os = <unloaded module 'os'>
 os.system = <built-in function system>
 os = <module 'os' from '?'>
@@ -19,11 +24,6 @@
 re = <unloaded module 'sys'>
 re.stderr = <open file '<whatever>', mode 'w' at 0x?>
 re = <proxied module 'sys'>
-pvecproxy = <unloaded module 'pvec'>
-pvecproxy.__doc__ = 'A "pvec" is ...'
-pvecproxy.__name__ = 'mercurial.pvec'
-pvecproxy.__dict__['__name__'] = 'mercurial.pvec'
-pvecproxy = <proxied module 'pvec'>
 contextlib = <unloaded module 'contextlib'>
 contextlib.unknownattr = ImportError: cannot import name unknownattr
 __import__('contextlib', ..., ['unknownattr']) = <module 'contextlib' from '?'>