--- a/src/pyams_content/reference/pictograms/zmi/manager.py	Fri Oct 26 10:03:07 2018 +0200
+++ b/src/pyams_content/reference/pictograms/zmi/manager.py	Sun Oct 28 16:22:29 2018 +0100
@@ -104,7 +104,7 @@
         manager = self.pictogram_manager
         if manager is not None:
             for pictogram in self.sorted_pictograms:
-                if pictogram.__name__ not in manager.selected_pictograms:
+                if pictogram.__name__ not in (manager.selected_pictograms or ()):
                     yield pictogram
 
     @property