diff --git a/Makefile b/Makefile
index be7c676..7c14c72 100644
--- a/Makefile
+++ b/Makefile
@@ -20,7 +20,8 @@ build.wasm:
 
 .Phony: build.site
 build.site:
-	rsync -a --exclude '*.test.mjs' site/ target/
+	cp -r site/* target/.
+	find target -name '*.test.mjs' -delete
 
 .Phony: dev
 dev: build