diff --git a/unblob/processing.py b/unblob/processing.py
index 7683880ad7..4b95ea7651 100644
--- a/unblob/processing.py
+++ b/unblob/processing.py
@@ -64,7 +64,6 @@
     "MS Windows icon resource",
     "Macromedia Flash data",
     "Microsoft Excel",
-    "Microsoft OOXML",
     "Microsoft PowerPoint",
     "Microsoft Word",
     "OpenDocument",