diff --git a/contrib/import-checker.py b/contrib/import-checker.py
--- a/contrib/import-checker.py
+++ b/contrib/import-checker.py
@@ -21,6 +21,7 @@ if True: # disable lexical sorting check
 # Whitelist of modules that symbols can be directly imported from.
 allowsymbolimports = (
     '__future__',
+    'mercurial',
     'mercurial.hgweb.common',
     'mercurial.hgweb.request',
     'mercurial.i18n',