diff --git a/modules/account/general_ledger_detail.fodt b/modules/account/general_ledger_detail.fodt
index b0a7006..3af1104 100644
--- a/modules/account/general_ledger_detail.fodt
+++ b/modules/account/general_ledger_detail.fodt
@@ -6,7 +6,8 @@
     xmlns:table="urn:oasis:names:tc:opendocument:xmlns:table:1.0"
     xmlns:fo="urn:oasis:names:tc:opendocument:xmlns:xsl-fo-compatible:1.0"
     xmlns:svg="urn:oasis:names:tc:opendocument:xmlns:svg-compatible:1.0"
-    office:version="1.2">
+    office:version="1.2"
+    office:mimetype="application/vnd.oasis.opendocument.text">
  <office:font-face-decls>
   <style:font-face style:name="Liberation Sans" svg:font-family="&apos;Liberation Sans&apos;" style:font-family-generic="swiss"/>
  </office:font-face-decls>