diff --git a/gui/qt/main_window.py b/gui/qt/main_window.py
index d91b4a33f..58861796e 100644
--- a/gui/qt/main_window.py
+++ b/gui/qt/main_window.py
@@ -1507,7 +1507,8 @@ class ElectrumWindow(QMainWindow):
         return self.create_list_tab(l)
 
     def create_contacts_tab(self):
-        l = MyTreeWidget(self, self.create_contact_menu, [_('Key'), _('Value'), _('Type')], 1)
+        l = MyTreeWidget(self, self.create_contact_menu, [_('Name'), _('Address'), _('Type')], 1, [0, 1])
+        l.item_edited = self.contact_edited
         self.contacts_list = l
         return self.create_list_tab(l)
 
@@ -1645,6 +1646,22 @@ class ElectrumWindow(QMainWindow):
         self.payto_e.setText(addr)
         self.amount_e.setFocus()
 
+    def contact_edited(self, item, column, prior):
+        if column == 0:  # Remove old contact if renamed
+            self.contacts.pop(prior)
+        self.set_contact(unicode(item.text(0)), unicode(item.text(1)))
+
+    def set_contact(self, label, address):
+        if not is_valid(address):
+            QMessageBox.warning(self, _('Error'), _('Invalid Address'), _('OK'))
+            self.update_contacts_tab()  # Displays original unchanged value
+            return False
+        self.contacts[label] = ('address', address)
+        self.update_contacts_tab()
+        self.update_history_tab()
+        self.update_completions()
+        return True
+
     def delete_contact(self, x):
         if not self.question(_("Do you want to remove")+" %s "%x +_("from your list of contacts?")):
             return
@@ -1936,19 +1953,8 @@ class ElectrumWindow(QMainWindow):
         if not d.exec_():
             return
 
-        address = str(line1.text())
-        label = unicode(line2.text())
-
-        if not is_valid(address):
-            QMessageBox.warning(self, _('Error'), _('Invalid Address'), _('OK'))
-            return
-
-        self.contacts[label] = ('address', address)
-
-        self.update_contacts_tab()
-        self.update_history_tab()
-        self.update_completions()
-        self.tabs.setCurrentIndex(3)
+        if self.set_contact(unicode(line2.text()), str(line1.text())):
+            self.tabs.setCurrentIndex(4)
 
 
     @protected
diff --git a/gui/qt/util.py b/gui/qt/util.py
index 3ad944b8f..82b38cb7d 100644
--- a/gui/qt/util.py
+++ b/gui/qt/util.py
@@ -289,13 +289,10 @@ class EditableItem(QTreeWidgetItem):
         self.setFlags(self.flags() | Qt.ItemIsEditable)
 
 class EditableItemDelegate(QStyledItemDelegate):
-    def __init__(self, parent, editable_columns):
-        QStyledItemDelegate.__init__(self, parent)
-        self.editable_columns = editable_columns
-
     def createEditor(self, parent, option, index):
-        if index.column() not in self.editable_columns:
+        if index.column() not in self.parent().editable_columns:
             return None
+        self.parent().prior_text = unicode(index.data().toString())
         return QStyledItemDelegate.createEditor(self, parent, option, index)
 
 class MyTreeWidget(QTreeWidget):
@@ -317,10 +314,11 @@ class MyTreeWidget(QTreeWidget):
         # Control which columns are editable
         if editable_columns is None:
             editable_columns = [stretch_column]
+        self.editable_columns = editable_columns
         self.setEditTriggers(QAbstractItemView.DoubleClicked |
                              QAbstractItemView.EditKeyPressed)
-        self.setItemDelegate(EditableItemDelegate(self, editable_columns))
-        self.itemChanged.connect(self.item_edited)
+        self.setItemDelegate(EditableItemDelegate(self))
+        self.itemChanged.connect(self.item_changed)
 
         # stretch
         for i in range(len(headers)):
@@ -340,6 +338,10 @@ class MyTreeWidget(QTreeWidget):
                 break
         self.emit(SIGNAL('customContextMenuRequested(const QPoint&)'), QPoint(50, i*5 + j - 1))
 
+    def item_changed(self, item, column):
+        '''Called only when the text actually changes'''
+        self.item_edited(item, column, self.prior_text)
+
     def item_edited(self, item, column, prior):
         '''Called only when the text actually changes'''
         key = str(item.data(0, Qt.UserRole).toString())