diff --git a/cmd/htpacker/yaml.go b/cmd/htpacker/yaml.go
index 37e10e1..c20cb02 100644
--- a/cmd/htpacker/yaml.go
+++ b/cmd/htpacker/yaml.go
@@ -150,7 +150,7 @@ func filesFromListR(prefix, arg string, ftp packer.FilesToPack) error {
 			case ".css":
 				ctype = "text/css"
 			case ".js":
-				ctype = "application/javascript"
+				ctype = "text/javascript"
 			case ".json":
 				ctype = "application/json"
 			case ".svg":