diff --git a/README.adoc b/README.adoc
index c997a98..cf59a43 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1160,11 +1160,9 @@ end
 
 # good
 def current_user
-  if instance_variable_defined?(:@current_user)
-    @current_user
-  else
-    @current_user = User.find_by(id: session[:user_id])
-  end
+  return @current_user if defined?(@current_user)
+
+  @current_user = User.find_by(id: session[:user_id])
 end
 ----