From 355f2e07d4657f13d9d3844a51196ffe16c9082e Mon Sep 17 00:00:00 2001
From: ThomasV <thomasv@electrum.org>
Date: Tue, 5 Apr 2016 17:24:03 +0200
Subject: [PATCH] fix #1749

---
 gui/kivy/uix/screens.py            | 3 ++-
 gui/kivy/uix/ui_screens/history.kv | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/gui/kivy/uix/screens.py b/gui/kivy/uix/screens.py
index b09d8c18..0f253bd8 100644
--- a/gui/kivy/uix/screens.py
+++ b/gui/kivy/uix/screens.py
@@ -164,7 +164,8 @@ class HistoryScreen(CScreen):
             ri.icon = icon
             ri.date = date_time
             ri.message = message
-            ri.value = value
+            ri.value = value if value is not None else 0
+            ri.value_known = value is not None
             ri.quote_text = quote_text
             ri.confirmations = conf
             ri.tx_hash = tx
diff --git a/gui/kivy/uix/ui_screens/history.kv b/gui/kivy/uix/ui_screens/history.kv
index 69ec02c1..8c4a29dd 100644
--- a/gui/kivy/uix/ui_screens/history.kv
+++ b/gui/kivy/uix/ui_screens/history.kv
@@ -20,7 +20,8 @@
     icon: 'atlas://gui/kivy/theming/light/important'
     message: ''
     value: 0
-    amount: app.format_amount(self.value, True) if self.value is not None else '--'
+    value_known: True
+    amount: app.format_amount(self.value, True) if self.value_known else '--'
     amount_color: '#FF6657' if self.value < 0 else '#2EA442'
     confirmations: 0
     date: ''