diff --git a/src/calibre/translations/eu.po b/src/calibre/translations/eu.po
index 8a78bae393..59bf6f0193 100644
--- a/src/calibre/translations/eu.po
+++ b/src/calibre/translations/eu.po
@@ -10908,7 +10908,7 @@ msgid ""
 "Applies to: ePub, MOBI output formats"
 msgstr ""
 "Baita ere bere baitan 'Serieak atala, katalogoan.\n"
-"Lehenetsita: '%lehenetsita'\n"
+"Lehenetsita: '%default'\n"
 "Aplikatzeko: ePub, MOBI output formatuetara"
 
 #: /home/kovid/work/calibre/src/calibre/library/catalog.py:581
diff --git a/src/calibre/translations/sk.po b/src/calibre/translations/sk.po
index 9fa285d006..5d68ff77ae 100644
--- a/src/calibre/translations/sk.po
+++ b/src/calibre/translations/sk.po
@@ -1054,7 +1054,7 @@ msgid ""
 "Unable to detect the %s disk drive. Your  kernel is probably exporting a "
 "deprecated version of SYSFS."
 msgstr ""
-"Nemožno detekovať % disk. Jadro pravdepodobne exportuje zastarané verzie "
+"Nemožno detekovať %s disk. Jadro pravdepodobne exportuje zastarané verzie "
 "SYSFS."
 
 #: /home/kovid/work/calibre/src/calibre/devices/usbms/device.py:613
diff --git a/src/calibre/translations/th.po b/src/calibre/translations/th.po
index 8bc232bc9a..24be3594df 100644
--- a/src/calibre/translations/th.po
+++ b/src/calibre/translations/th.po
@@ -1036,7 +1036,7 @@ msgstr "ตรวจสอบไม่พบ ดิสก์ไดร์ %s  ล
 
 #: /home/kovid/work/calibre/src/calibre/devices/usbms/device.py:435
 msgid "Unable to detect the %s mount point. Try rebooting."
-msgstr "ตรวจสอบไม่พบ"
+msgstr "ตรวจสอบไม่พบ %s"
 
 #: /home/kovid/work/calibre/src/calibre/devices/usbms/device.py:500
 msgid "Unable to detect the %s disk drive."