diff --git a/PIL/OleFileIO.py b/PIL/OleFileIO.py
index 2d6aeb85c..b3caa10d5 100644
--- a/PIL/OleFileIO.py
+++ b/PIL/OleFileIO.py
@@ -1,12 +1,4 @@
-import warnings
-
-warnings.warn(
+raise ImportError(
     'PIL.OleFileIO is deprecated. Use the olefile Python package '
-    'instead. This module will be removed in a future version.',
-    DeprecationWarning
+    'instead. This module will be removed in a future version.'
 )
-
-import olefile
-import sys
-
-sys.modules[__name__] = olefile