diff --git a/buildj.v b/buildj.v
index b0aeb7e..36b100e 100644
--- a/buildj.v
+++ b/buildj.v
@@ -9,15 +9,15 @@ import buildj_util
 
 // https://bitbucket.org/hatterjiang/archived-study_v/src/master/buildjs.v
 const (
-	BUILDJ_NAME = 'buildj.v'
+    BUILDJ_NAME = 'buildj.v'
     BUILDJ_VERSION = '0.1'
     BUILD_JSON = 'build.json'
 )
 
 fn main() {
-	buildj_util.check_os()
-	show_buildjs_head()
-	println(buildj_util.get_readable_size(1000000))
+    buildj_util.check_os()
+    show_buildjs_head()
+    println(buildj_util.get_readable_size(1000000))
 }
 
 fn show_buildjs_head() {