diff --git a/tabellio/pcfdb/sync.py b/tabellio/pcfdb/sync.py
index e0db924..b0368e3 100644
--- a/tabellio/pcfdb/sync.py
+++ b/tabellio/pcfdb/sync.py
@@ -1039,7 +1039,10 @@ class SyncFromPcfDbView(BrowserView):
             else:
                 object.authors = []
 
-            object.commissions = [RelationValue(self.get_commission_intid(x)) for x in curcom or []]
+            try:
+                object.commissions = [RelationValue(self.get_commission_intid(x)) for x in curcom or []]
+            except AttributeError:
+                pass
 
             if polgroups:
                 polgroups = [self.get_polgroup_intid(polgroups_id_to_title[x]) for x in polgroups]