diff --git a/po/pl.po b/po/pl.po
index ae06747f4..00049ca25 100644
--- a/po/pl.po
+++ b/po/pl.po
@@ -390,10 +390,14 @@ msgid "Left"
 msgstr "Lewo"
 
 #: ../settings-dialogs/xfwm4-settings.c:229
-msgid "Center"
-msgstr "Środek"
+msgid "Center in Free Space"
+msgstr "Środek (wolna przestrzeń)"
 
 #: ../settings-dialogs/xfwm4-settings.c:230
+msgid "Center in Window"
+msgstr "Środek (okno)"
+
+#: ../settings-dialogs/xfwm4-settings.c:231
 msgid "Right"
 msgstr "Prawo"