diff --git a/templates/web-demo/web-extra.mk b/templates/web-demo/web-extra.mk
index 82b18f3..9414cc3 100644
--- a/templates/web-demo/web-extra.mk
+++ b/templates/web-demo/web-extra.mk
@@ -20,7 +20,7 @@
 
 ALL += build/web/index.html build/web/cert.pem build/web/key.pem
 
-build/web/index.html: ${DATA_DIR}/src/index.html | build
+build/web/index.html: ${DATA_DIR}/src/index.html | build/web
 	cp $^ $@
 
 build/web/key.pem: build/web/cert.pem