diff --git a/WPrefs.app/po/README b/WPrefs.app/po/README
index 2bf7c96e..ff250ce6 100644
--- a/WPrefs.app/po/README
+++ b/WPrefs.app/po/README
@@ -1,6 +1,18 @@
 
-Instructions for translating po files can be found in the po/README directory
-in the top of the WindowMaker source tree.
+General instructions for translating po files can be found in the po/README directory
+in the top of the WindowMaker source tree. To update one of the WPrefs.app
+translations (e.g. the German) do this:
+
+1) make WPrefs.pot
+
+2) edit the file WPrefs.pot, adding new translated strings or correcting
+   previous entries
+
+3) msgmerge de.po WPrefs.pot > de.po.new
+
+4) After checking de.po.new is OK, rename it to de.po to overwrite the
+   previous file.
+
 
 All files are now in UTF-8