diff --git a/build.sh b/build.sh
index 49426af..7e2d6c6 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,5 @@
 #!/bin/sh
 
+rm -r build/$1/*
 cp -R src/{*.js,*.html,*.css,fonts,images} build/$1/
-cp src/platform/$1/ build/$1/
+cp src/platform/$1/* build/$1/