diff --git a/nunvm.nu b/nunvm.nu
index b7e8775..73ef3a0 100644
--- a/nunvm.nu
+++ b/nunvm.nu
@@ -9,11 +9,8 @@
 #
 # Copyright 2023 Yakiyo. All rights reserved. MIT license.
 
-use std log
-
-(_nunvm_set_log_level)
 # nunvm version
-const nunvm_version = "0.1.0" 
+const nunvm_version = "0.2.0" 
 
 # Nodejs dist url
 const node_dist = "https://nodejs.org/dist"
@@ -24,6 +21,8 @@ const node_dist = "https://nodejs.org/dist"
 def main [
   --version(-v) # Display current nunvm version
 ] {
+  _nunvm_set_log_level
+
   if $version {
     print $"v($nunvm_version)"
     return
@@ -331,7 +330,7 @@ def _nunvm_symln [
 }
 
 # Read `$env.NUNVM_LOG` and set it to `$env.NU_LOG_LEVEL`
-def-env _nunvm_set_log_level [] {
+def --env _nunvm_set_log_level [] {
   let nunvm_log = $env.NUNVM_LOG?
   if $nunvm_log != null {
     $env.NU_LOG_LEVEL = $nunvm_log