Index: Makefile.in
--- Makefile.in.orig
+++ Makefile.in
@@ -869,12 +869,12 @@ uninstall-am: uninstall-datafilesDATA uninstall-local
 install-data-local:
 	@$(NORMAL_INSTALL)
 	$(MKDIR_P) $(DESTDIR)$(dunelegacydatadir)/locale
-	$(INSTALL_DATA) data/locale/*.pot $(DESTDIR)$(dunelegacydatadir)/locale/
-	$(INSTALL_DATA) data/locale/*.po $(DESTDIR)$(dunelegacydatadir)/locale/
+	$(INSTALL_DATA) $(srcdir)/data/locale/*.pot $(DESTDIR)$(dunelegacydatadir)/locale/
+	$(INSTALL_DATA) $(srcdir)/data/locale/*.po $(DESTDIR)$(dunelegacydatadir)/locale/
 	$(MKDIR_P) $(DESTDIR)$(dunelegacydatadir)/maps/singleplayer
-	$(INSTALL_DATA) data/maps/singleplayer/*.ini $(DESTDIR)$(dunelegacydatadir)/maps/singleplayer/
+	$(INSTALL_DATA) $(srcdir)/data/maps/singleplayer/*.ini $(DESTDIR)$(dunelegacydatadir)/maps/singleplayer/
 	$(MKDIR_P) $(DESTDIR)$(dunelegacydatadir)/maps/multiplayer
-	$(INSTALL_DATA) data/maps/multiplayer/*.ini $(DESTDIR)$(dunelegacydatadir)/maps/multiplayer/
+	$(INSTALL_DATA) $(srcdir)/data/maps/multiplayer/*.ini $(DESTDIR)$(dunelegacydatadir)/maps/multiplayer/
 
 uninstall-local:
 	@$(NORMAL_UNINSTALL)
