From a4a2eb9b5c6c67e2873bd3eb165f237b4f929990 Mon Sep 17 00:00:00 2001
From: Neil Booth <kyuupichan@gmail.com>
Date: Sat, 26 Sep 2015 17:19:14 +0900
Subject: [PATCH] Handle None satoshis properly

---
 plugins/exchange_rate.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/plugins/exchange_rate.py b/plugins/exchange_rate.py
index 0ec5e0509..64513bc82 100644
--- a/plugins/exchange_rate.py
+++ b/plugins/exchange_rate.py
@@ -416,6 +416,8 @@ class Plugin(BasePlugin, ThreadJob):
         return True
 
     def value_str(self, satoshis, rate):
+        if satoshis is None:  # Can happen with incomplete history
+            return _("Unknown")
         if rate:
             value = Decimal(satoshis) / COIN * Decimal(rate)
             return "%s" % (self.ccy_amount_str(value, True))