diff --git a/plasmid/resource/jython-scripts/MP-plasmid_parents.py b/plasmid/resource/jython-scripts/MP-plasmid_parents.py
index 366a910d47780ccd87704e9cc64dd21f2d4f28cf..b4692c7bfa3ac741bf5e012aedebaa83fe7d70c0 100644
--- a/plasmid/resource/jython-scripts/MP-plasmid_parents.py
+++ b/plasmid/resource/jython-scripts/MP-plasmid_parents.py
@@ -37,7 +37,7 @@ MOD_REL_TYPE = 'MOD'
 REL_TYPES = (DEL_REL_TYPE, INT_REL_TYPE, MOD_REL_TYPE)
 """dictionary from relationship type shortcut to its 'character' representation"""
 REL_TYPE_CHARS = {
-    DEL_REL_TYPE: '^', # TODO 2011-14-03, Piotr Buczek: use u'\u0394' for '∆', don't encode HTML
+    DEL_REL_TYPE: u'\u0394', # unicode '∆'
     INT_REL_TYPE: '::', 
     MOD_REL_TYPE: '_' 
 }