diff --git a/Lib/idlelib/README.txt b/Lib/idlelib/README.txt
index 42c3506699ba07..48a1f4a425c9e3 100644
--- a/Lib/idlelib/README.txt
+++ b/Lib/idlelib/README.txt
@@ -115,7 +115,7 @@ tooltip.py # unused
 
 IDLE MENUS
 Top level items and most submenu items are defined in mainmenu.
-Extenstions add submenu items when active.  The names given are
+Extensions add submenu items when active.  The names given are
 found, quoted, in one of these modules, paired with a '<<pseudoevent>>'.
 Each pseudoevent is bound to an event handler.  Some event handlers
 call another function that does the actual work.  The annotations below
diff --git a/Lib/idlelib/browser.py b/Lib/idlelib/browser.py
index e5b0bc53c66240..3c3a53a6599a79 100644
--- a/Lib/idlelib/browser.py
+++ b/Lib/idlelib/browser.py
@@ -29,7 +29,7 @@ def transform_children(child_dict, modname=None):
     The dictionary maps names to pyclbr information objects.
     Filter out imported objects.
     Augment class names with bases.
-    The insertion order of the dictonary is assumed to have been in line
+    The insertion order of the dictionary is assumed to have been in line
     number order, so sorting is not necessary.
 
     The current tree only calls this once per child_dict as it saves