diff --git a/Doc/library/importlib.rst b/Doc/library/importlib.rst
index c9fb63b75a4718b161a7ef5bd0f41fd2a5398f0f..85c23472e27560444663664a6e66a07df31a2ceb 100644
--- a/Doc/library/importlib.rst
+++ b/Doc/library/importlib.rst
@@ -1749,6 +1749,9 @@ Checking if a module can be imported
 
 If you need to find out if a module can be imported without actually doing the
 import, then you should use :func:`importlib.util.find_spec`.
+
+Note that if ``name`` is a submodule (contains a dot),
+:func:`importlib.util.find_spec` will import the parent module.
 ::
 
   import importlib.util