Index: src/SciTEGlobal.properties
--- src/SciTEGlobal.properties.orig
+++ src/SciTEGlobal.properties
@@ -285,7 +285,7 @@ if PLAT_WIN
 	command.scite.help="file://$(SciteDefaultHome)\SciTEDoc.html"
 	command.scite.help.subsystem=2
 if PLAT_GTK
-	command.scite.help=xdg-open "file://$(SciteDefaultHome)/SciTEDoc.html"
+	command.scite.help=xdg-open "file://__DOCDIR__/SciTEDoc.html"
 
 # Internationalisation
 # Japanese input code page 932 and ShiftJIS character set 128
