diff --git a/sea/Makefile b/sea/Makefile
index 27a6f4d576..9929319258 100644
--- a/sea/Makefile
+++ b/sea/Makefile
@@ -1,16 +1,16 @@
 all: boinc_sea.sh
 
 boinc_sea.sh: make-sea.sh sea.tar
-	./make-sea.sh sea.tar boinc_sea.sh BOINC/binstall.sh
+	sh make-sea.sh sea.tar boinc_sea.sh BOINC/binstall.sh
 
 sea.tar: BOINC/boinc_client BOINC/boinc_gui BOINC/binstall.sh
-	tar chf $@ $^
+	tar cf $@ $^
 
 BOINC/boinc_client: ../client/boinc_client
-	ln -s ../$< $@
+	cp $< $@
 
 BOINC/boinc_gui: ../clientgui/boinc_gui
-	ln -s ../$< $@
+	cp $< $@
 
 clean:
 	rm -f BOINC/boinc_* sea.tar boinc_sea.sh