diff --git a/Makefile b/Makefile
index d64eae9..b3ebb21 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,7 @@
.PHONY: all
-all:
+all: platformer.min.js
make -C asset
make -C images
+
+platformer.min.js: platformer.js
+ jsmin < $< > $@
diff --git a/index.html b/index.html
index 6cf3df4..ca80106 100644
--- a/index.html
+++ b/index.html
@@ -7,7 +7,7 @@
-
+