--- browser/app/Makefile.in.orig	2018-01-23 12:57:00.210372075 +0000
+++ browser/app/Makefile.in	2018-01-23 12:57:52.269872817 +0000
@@ -47,6 +47,7 @@
 ifdef COMPILE_ENVIRONMENT
 libs::
 	cp -p $(DIST)/bin/$(MOZ_APP_NAME)$(BIN_SUFFIX) $(DIST)/bin/$(MOZ_APP_NAME)-bin$(BIN_SUFFIX)
+	cp $(topsrcdir)/kde.js $(DIST)/bin/defaults/pref/kde.js
 endif
 
 GARBAGE += $(addprefix $(FINAL_TARGET)/defaults/pref/, firefox.js)