diff --git a/mercurial/help.py b/mercurial/help.py
--- a/mercurial/help.py
+++ b/mercurial/help.py
@@ -31,7 +31,7 @@ def loaddoc(topic):
     """Return a delayed loader for help/topic.txt."""
 
     def loader():
-        if hasattr(sys, 'frozen'):
+        if util.mainfrozen():
             module = sys.executable
         else:
             module = __file__
diff --git a/mercurial/hook.py b/mercurial/hook.py
--- a/mercurial/hook.py
+++ b/mercurial/hook.py
@@ -28,7 +28,7 @@ def _pythonhook(ui, repo, name, hname, f
                                'a module)') % (hname, funcname))
         modname = funcname[:d]
         oldpaths = sys.path
-        if hasattr(sys, "frozen"):
+        if util.mainfrozen():
             # binary installs require sys.path manipulation
             modpath, modfile = os.path.split(modname)
             if modpath and modfile:
diff --git a/mercurial/templater.py b/mercurial/templater.py
--- a/mercurial/templater.py
+++ b/mercurial/templater.py
@@ -341,7 +341,7 @@ def templatepath(name=None):
     normpaths = []
 
     # executable version (py2exe) doesn't support __file__
-    if hasattr(sys, 'frozen'):
+    if util.mainfrozen():
         module = sys.executable
     else:
         module = __file__