diff --git a/Makefile b/Makefile
index 55a856454..d63353f3d 100644
--- a/Makefile
+++ b/Makefile
@@ -173,7 +173,7 @@ Kappapp:
 	+$(MAKE) build/Kappapp
 
 build/Kappapp.tar.gz: build/Kappapp
-	tar czf $@ build/Kappapp
+	tar -C build czf $@ Kappapp
 	rm -r build/Kappapp
 
 Kappapp.tar.gz: build/Kappapp.tar.gz