diff --git a/Makefile b/Makefile
index c16c086..88e67c1 100755
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ all: build stat clean
 build:
 	rm -f muri-src.zip muri.zip src/muri.min.js
 	uglifyjs --compress --mangle --no-dead-code --output src/muri.min.js src/*.js
-	#(cd src/assets/images; for i in `ls *.png`; do pngcrush -brute -reduce_palette -ow $$i; done)
+	(cd src/assets/images; for i in `ls *.png`; do pngcrush -brute -reduce_palette -ow $$i; done)
 	(cd src && zip -q -9 ../muri.zip index.html muri.min.js assets/* assets/**/* vendor/*.min.js)
 	(cd src && zip -q -9 ../muri-src.zip ./* ./**/* ./**/**/* ../README)