diff --git a/Doc/library/importlib.rst b/Doc/library/importlib.rst
index fee5df84dffcb2..198fc8355ebdd4 100644
--- a/Doc/library/importlib.rst
+++ b/Doc/library/importlib.rst
@@ -612,7 +612,7 @@ ABC hierarchy::
 
     .. method:: is_package(fullname)
 
-        An abstract method to return a true value if the module is a package, a
+        An optional method to return a true value if the module is a package, a
         false value otherwise. :exc:`ImportError` is raised if the
         :term:`loader` cannot find the module.