From 57d6d64ad326052a2c77a2f5f1efa535de27e1f4 Mon Sep 17 00:00:00 2001
From: Alexander Pletnev <pletnev.alex@gmail.com>
Date: Fri, 2 Oct 2015 23:31:00 +0300
Subject: [PATCH] Add Statistic plugin (#1581 Amount of hours spent on a book)
 check for NaN in case when nothing read yet

---
 plugins/statistics.koplugin/main.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/statistics.koplugin/main.lua b/plugins/statistics.koplugin/main.lua
index 92a174ee9..a654dde63 100755
--- a/plugins/statistics.koplugin/main.lua
+++ b/plugins/statistics.koplugin/main.lua
@@ -309,7 +309,7 @@ end
 --https://gist.github.com/jesseadams/791673
 function ReaderStatistics:secondsToClock(seconds)
     local seconds = tonumber(seconds)
-    if seconds == 0 then
+    if seconds == 0 or seconds ~= seconds then
         return "00:00:00";
     else
         local hours = string.format("%02.f", math.floor(seconds / 3600));