--- a/src/pyams_content/reference/pictograms/zmi/__init__.py	Wed Apr 04 15:35:44 2018 +0200
+++ b/src/pyams_content/reference/pictograms/zmi/__init__.py	Thu Apr 05 15:30:06 2018 +0200
@@ -65,6 +65,7 @@
     """Pictogram add form"""
 
     legend = _("Add new pictogram")
+    dialog_class = 'modal-large'
 
     fields = field.Fields(IPictogram).omit('__parent__', '__name__')
     ajax_handler = 'add-pictogram.json'