diff --git a/subjects/btreelevelcount.md b/subjects/btreelevelcount.md
index bfb4986c..2576e109 100644
--- a/subjects/btreelevelcount.md
+++ b/subjects/btreelevelcount.md
@@ -20,8 +20,8 @@ Here is a possible [program](TODO-LINK) to test your function :
 package main
 
 import (
-  "fmt"
-  student ".."
+	"fmt"
+	student ".."
 )
 
 func main() {