diff --git a/src/collective/dms/basecontent/browser/column.py b/src/collective/dms/basecontent/browser/column.py
index 9311b26..1a538b9 100644
--- a/src/collective/dms/basecontent/browser/column.py
+++ b/src/collective/dms/basecontent/browser/column.py
@@ -90,7 +90,7 @@ class PrincipalColumn(Column):
             else:
                 principals.append(unicode(principal_id))
 
-        return ', '.join(principals).decode('utf-8')
+        return ', '.join(principals)
 
 
 class LinkColumn(z3c.table.column.LinkColumn, Column):