From c8358bb266b427209605ca9ca8628311a7ceb43c Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sun, 21 Oct 2012 15:19:16 +0530
Subject: [PATCH] ...

---
 src/calibre/ebooks/metadata/fb2.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/calibre/ebooks/metadata/fb2.py b/src/calibre/ebooks/metadata/fb2.py
index cecdfead0d..5a52ceb701 100644
--- a/src/calibre/ebooks/metadata/fb2.py
+++ b/src/calibre/ebooks/metadata/fb2.py
@@ -379,6 +379,10 @@ def set_metadata(stream, mi, apply_null=False, update_timestamp=False):
 
     stream.seek(0)
     stream.truncate()
+    # Apparently there exists FB2 reading software that chokes on the use of
+    # single quotes in xml declaration. Sigh. See
+    # http://www.mobileread.com/forums/showthread.php?p=2273184#post2273184
+    stream.write(b'<?xml version="1.0" encoding="UTF-8"?>\n')
     stream.write(etree.tostring(root, method='xml', encoding='utf-8',
-        xml_declaration=True))
+        xml_declaration=False))