diff --git a/magic/Magdir/msooxml b/magic/Magdir/msooxml
index bde098e..7d0bcc7 100644
--- a/magic/Magdir/msooxml
+++ b/magic/Magdir/msooxml
@@ -28,16 +28,16 @@
# skip to the second local file header
# since some documents include a 520-byte extra field following the file
# header, we need to scan for the next header
->>(18.l+49) search/2000 PK\003\004
+>>(18.l+49) search/6000 PK\003\004
# now skip to the *third* local file header; again, we need to scan due to a
# 520-byte extra field following the file header
->>>&26 search/1000 PK\003\004
+>>>&26 search/6000 PK\003\004
# and check the subdirectory name to determine which type of OOXML
# file we have. Correct the mimetype with the registered ones:
# http://technet.microsoft.com/en-us/library/cc179224.aspx
>>>>&26 use msooxml
>>>>&26 default x
# OpenOffice/Libreoffice orders ZIP entry differently, so check the 4th file
->>>>>&26 search/1000 PK\003\004
+>>>>>&26 search/6000 PK\003\004
>>>>>>&26 use msooxml
>>>>>>&26 default x Microsoft OOXML