diff --git a/src/calibre/ebooks/oeb/output.py b/src/calibre/ebooks/oeb/output.py
index 585b56c7b6..6709141a01 100644
--- a/src/calibre/ebooks/oeb/output.py
+++ b/src/calibre/ebooks/oeb/output.py
@@ -32,6 +32,12 @@ class OEBOutput(OutputFormatPlugin):
             for key in (OPF_MIME, NCX_MIME, PAGE_MAP_MIME):
                 href, root = results.pop(key, [None, None])
                 if root is not None:
+                    if key == OPF_MIME:
+                        try:
+                            self.workaround_nook_cover_bug(root)
+                        except:
+                            self.log.exception('Something went wrong while trying to'
+                                    ' workaround Nook cover bug, ignoring')
                     raw = etree.tostring(root, pretty_print=True,
                             encoding='utf-8', xml_declaration=True)
                     if key == OPF_MIME:
@@ -49,3 +55,24 @@ class OEBOutput(OutputFormatPlugin):
                 with open(path, 'wb') as f:
                     f.write(str(item))
                 item.unload_data_from_memory(memory=path)
+
+    def workaround_nook_cover_bug(self, root): # {{{
+        cov = root.xpath('//*[local-name() = "meta" and @name="cover" and'
+                ' @content != "cover"]')
+        if len(cov) == 1:
+            manpath = ('//*[local-name() = "manifest"]/*[local-name() = "item" '
+                ' and @id="%s" and @media-type]')
+            cov = cov[0]
+            covid = cov.get('content')
+            manifest_item = root.xpath(manpath%covid)
+            has_cover = root.xpath(manpath%'cover')
+            if len(manifest_item) == 1 and not has_cover and \
+                    manifest_item[0].get('media-type',
+                            '').startswith('image/'):
+                self.log.warn('The cover image has an id != "cover". Renaming'
+                        ' to work around Nook Color bug')
+                manifest_item = manifest_item[0]
+                manifest_item.set('id', 'cover')
+                cov.set('content', 'cover')
+    # }}}
+