diff --git a/bt5/erp5_dms/SkinTemplateItem/portal_skins/erp5_dms/PDF_viewHTMLPreviewAsImage/body.xml b/bt5/erp5_dms/SkinTemplateItem/portal_skins/erp5_dms/PDF_viewHTMLPreviewAsImage/body.xml
index 6fe51bdfd9a5b7d6b2f2dee8b94786d4fbc64288..d7be65681329ed0b06d62e6ac8c2908c3321a7b1 100644
--- a/bt5/erp5_dms/SkinTemplateItem/portal_skins/erp5_dms/PDF_viewHTMLPreviewAsImage/body.xml
+++ b/bt5/erp5_dms/SkinTemplateItem/portal_skins/erp5_dms/PDF_viewHTMLPreviewAsImage/body.xml
@@ -218,7 +218,7 @@
                 </item>
                 <item>
                     <key> <string>css_class</string> </key>
-                    <value> <string></string> </value>
+                    <value> <string>hidden_label</string> </value>
                 </item>
                 <item>
                     <key> <string>default</string> </key>
diff --git a/bt5/erp5_dms/bt/revision b/bt5/erp5_dms/bt/revision
index 1b003ab28f1c6ab7c473de7866eb02c53161b554..17a2ddadb417dddcaa67cd070f8ce236ebd052d4 100644
--- a/bt5/erp5_dms/bt/revision
+++ b/bt5/erp5_dms/bt/revision
@@ -1 +1 @@
-906
\ No newline at end of file
+907
\ No newline at end of file