diff --git a/libmat2/office.py b/libmat2/office.py
index 21bff6ed9cfbf97cce095218f2516f50eae7a2ea..aee98af05c4de302222fe97e867f1271df18052b 100644
--- a/libmat2/office.py
+++ b/libmat2/office.py
@@ -93,6 +93,11 @@ class MSOfficeParser(ZipParser):
             r'^(?:word|ppt)/theme',
             r'^(?:word|ppt)/people\.xml$',
             r'^(?:word|ppt)/numbering\.xml$',
+            # View properties like view mode, last viewed slide etc
+            r'^(?:word|ppt)/viewProps\.xml$',
+            # Additional presentation-wide properties like printing properties,
+            # presentation show properties etc.
+            r'^(?:word|ppt)/presProps\.xml$',
 
             # we have an allowlist in self.files_to_keep,
             # so we can trash everything else