diff --git a/gajim/gtk/vcard_grid.py b/gajim/gtk/vcard_grid.py
index 7c3f67b99a51aa5e83227b07085d88f4a674eda9..dd7f81441987570e16da469dcec3720562195ce6 100644
--- a/gajim/gtk/vcard_grid.py
+++ b/gajim/gtk/vcard_grid.py
@@ -583,7 +583,7 @@ def __init__(self, prop, account):
     def _on_text_changed(self, entry, _param):
         text = entry.get_text()
         if self._prop.name == 'org':
-            self._prop.values[0] = text
+            self._prop.values = [text]
         else:
             self._prop.value = text
         self._value_label.set_value(text)