diff --git a/user_manual/locale/cs/LC_MESSAGES/pim/sync_thunderbird.pot b/user_manual/locale/cs/LC_MESSAGES/pim/sync_thunderbird.pot
index 8e7f172f9..9556556df 100644
--- a/user_manual/locale/cs/LC_MESSAGES/pim/sync_thunderbird.pot
+++ b/user_manual/locale/cs/LC_MESSAGES/pim/sync_thunderbird.pot
@@ -64,13 +64,16 @@ msgstr ""
 #: ../../pim/sync_thunderbird.rst:14
 msgid ""
 "`TbSync <https://addons.thunderbird.net/en/thunderbird/addon/tbsync/>`_."
-msgstr "`TbSync `_."
+msgstr ""
+"`TbSync <https://addons.thunderbird.net/en/thunderbird/addon/tbsync/>`_."
 
 #: ../../pim/sync_thunderbird.rst:15
 msgid ""
 "The `TbSync provider for CalDAV and CardDAV "
 "<https://addons.thunderbird.net/en/thunderbird/addon/dav-4-tbsync/>`_."
-msgstr "Poskytovatel `TbSync pro CalDAV a CardDAV `_."
+msgstr ""
+"`Poskytovatel `TbSync pro CalDAV a CardDAV "
+"<https://addons.thunderbird.net/en/thunderbird/addon/dav-4-tbsync/>`_."
 
 #: ../../pim/sync_thunderbird.rst:17
 msgid ""
@@ -153,9 +156,9 @@ msgid ""
 "is an advanced alternative to Thunderbird's address book, which supports "
 "CardDAV. You can have TbSync and CardBook installed in parallel."
 msgstr ""
-"`CardBook `_ je pokročilá alternativa k adresáři kontaktů v Thunderbirdu, "
-"která podporuje CardDAV. TbSync a CardBook je možné mít nainstalované vedle "
-"sebe."
+"`CardBook <https://addons.thunderbird.net/en/thunderbird/addon/cardbook/>`_ "
+"je pokročilá alternativa k adresáři kontaktů v Thunderbirdu, která podporuje"
+" CardDAV. TbSync a CardBook je možné mít nainstalované vedle sebe."
 
 #: ../../pim/sync_thunderbird.rst:32
 msgid "Click the CardBook icon in the upper right corner of Thunderbird:"