diff --git a/sysui/desktop/mimetypes/ms-excel-sheet.desktop b/sysui/desktop/mimetypes/ms-excel-sheet.desktop
index 52c02a7628bb..6f81077ca5a3 100644
--- a/sysui/desktop/mimetypes/ms-excel-sheet.desktop
+++ b/sysui/desktop/mimetypes/ms-excel-sheet.desktop
@@ -22,6 +22,5 @@ Hidden=false
 Icon=
 Type=MimeType
 Patterns=*.xls
-Patterns=*.et
 MimeType=application/vnd.ms-excel
 Comment=Microsoft Excel Worksheet
diff --git a/sysui/desktop/mimetypes/ms-excel-template-12.desktop b/sysui/desktop/mimetypes/ms-excel-template-12.desktop
index 449952473268..2b4a0f254c97 100644
--- a/sysui/desktop/mimetypes/ms-excel-template-12.desktop
+++ b/sysui/desktop/mimetypes/ms-excel-template-12.desktop
@@ -22,6 +22,5 @@ Hidden=false
 Icon=
 Type=MimeType
 Patterns=*.xltm
-Patterns=*.ett
 MimeType=application/vnd.ms-excel.template.macroenabled.12
 Comment=Microsoft Excel Worksheet Template
diff --git a/sysui/desktop/mimetypes/ms-powerpoint-presentation.desktop b/sysui/desktop/mimetypes/ms-powerpoint-presentation.desktop
index 60afd56cdcb5..43da8c389a48 100644
--- a/sysui/desktop/mimetypes/ms-powerpoint-presentation.desktop
+++ b/sysui/desktop/mimetypes/ms-powerpoint-presentation.desktop
@@ -22,6 +22,5 @@ Hidden=false
 Icon=
 Type=MimeType
 Patterns=*.ppt
-Patterns=*.dps
 MimeType=application/vnd.ms-powerpoint
 Comment=Microsoft PowerPoint Presentation
diff --git a/sysui/desktop/mimetypes/ms-powerpoint-template-12.desktop b/sysui/desktop/mimetypes/ms-powerpoint-template-12.desktop
index 0b14170204d5..a03a43185859 100644
--- a/sysui/desktop/mimetypes/ms-powerpoint-template-12.desktop
+++ b/sysui/desktop/mimetypes/ms-powerpoint-template-12.desktop
@@ -22,6 +22,5 @@ Hidden=false
 Icon=
 Type=MimeType
 Patterns=*.potm
-Patterns=*.dpt
 MimeType=application/vnd.ms-powerpoint.template.macroenabled.12
 Comment=Microsoft PowerPoint Presentation Template
diff --git a/sysui/desktop/mimetypes/ms-word-document.desktop b/sysui/desktop/mimetypes/ms-word-document.desktop
index 756d21b6e58a..e4c3ee45ccba 100644
--- a/sysui/desktop/mimetypes/ms-word-document.desktop
+++ b/sysui/desktop/mimetypes/ms-word-document.desktop
@@ -22,6 +22,5 @@ Hidden=false
 Icon=
 Type=MimeType
 Patterns=*.doc
-Patterns=*.wps
 MimeType=application/msword
 Comment=Microsoft Word Document
diff --git a/sysui/desktop/mimetypes/ms-word-template-12.desktop b/sysui/desktop/mimetypes/ms-word-template-12.desktop
index 1c6e25a3b878..f16852aee9d8 100644
--- a/sysui/desktop/mimetypes/ms-word-template-12.desktop
+++ b/sysui/desktop/mimetypes/ms-word-template-12.desktop
@@ -22,6 +22,5 @@ Hidden=false
 Icon=
 Type=MimeType
 Patterns=*.dotm
-Patterns=*.wpt
 MimeType=application/vnd.ms-word.template.macroenabled.12
 Comment=Microsoft Word Document Template