@@ -90,6 +90,7 @@
 import sys as _sys
 
 from gettext import gettext as _, ngettext
+from zipfile import is_zipfile as _is_zipfile
 
 SUPPRESS = '==SUPPRESS=='
 
@@ -1662,6 +1663,22 @@
         self._group_actions.remove(action)
 
 
+def _prog_name(prog):
+    if prog is not None:
+        return prog
+
+    mod = _sys.modules['__main__']
+    arg0 = _sys.argv[0]
+    if mod.__spec__ is None:
+        return _os.path.basename(arg0)
+
+    py = _os.path.basename(_sys.executable)
+    if _is_zipfile(arg0):
+        return f'{py} {arg0}'
+
+    return f'{py} -m {mod.__spec__.name.removesuffix(".__main__")}'
+
+
 class ArgumentParser(_AttributeHolder, _ActionsContainer):
     """Object for parsing command line strings into Python objects.
 
@@ -1704,11 +1721,7 @@
                   argument_default=argument_default,
                   conflict_handler=conflict_handler)
 
-        # default setting for prog
-        if prog is None:
-            prog = _os.path.basename(_sys.argv[0])
-
-        self.prog = prog
+        self.prog = _prog_name(prog)
         self.usage = usage
         self.epilog = epilog
         self.formatter_class = formatter_class