From bc710e890d99f522d4adb0fa9bff5b0504a5a036 Mon Sep 17 00:00:00 2001
From: Jacek Kowalski <Jacek@jacekk.info>
Date: Mon, 28 Aug 2017 10:33:48 +0000
Subject: [PATCH] Fixes for PHP 7.0 compatibility

---
 includes/convert.php |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/includes/convert.php b/includes/convert.php
index 6d636d9..9a3ada3 100644
--- a/includes/convert.php
+++ b/includes/convert.php
@@ -10,7 +10,7 @@
 		}
 		else
 		{
-			error::add('Kodu ISBN-13 '.$kod.' nie można zamienić na ISBN-10!');
+			errorclass::add('Kodu ISBN-13 '.$kod.' nie można zamienić na ISBN-10!');
 		}
 	}
 	

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