diff --git a/Lib/distutils/command/build_py.py b/Lib/distutils/command/build_py.py
index 2d0ad1c..4e5255a 100644
--- a/Lib/distutils/command/build_py.py
+++ b/Lib/distutils/command/build_py.py
@@ -146,7 +146,7 @@
                 raise DistutilsFileError, \
                       "package directory '%s' does not exist" % package_dir
             if not os.path.isdir (package_dir):
-                raise DistutilsFileErorr, \
+                raise DistutilsFileError, \
                       ("supposed package directory '%s' exists, " +
                        "but is not a directory") % package_dir