diff --git a/Lib/plat-mac/bundlebuilder.py b/Lib/plat-mac/bundlebuilder.py
index 8f59969..61cadba 100755
--- a/Lib/plat-mac/bundlebuilder.py
+++ b/Lib/plat-mac/bundlebuilder.py
@@ -669,7 +669,7 @@
                 if self.use_zipimport:
                     if name != "zlib":
                         # neatly pack all extension modules in a subdirectory,
-                        # except zlib, since it's neccesary for bootstrapping.
+                        # except zlib, since it's necessary for bootstrapping.
                         dstpath = pathjoin("ExtensionModules", dstpath)
                     # Python modules are stored in a Zip archive, but put
                     # extensions in Contents/Resources/. Add a tiny "loader"