diff --git a/context.go b/context.go
index baea3d4..b5c6e6d 100644
--- a/context.go
+++ b/context.go
@@ -439,11 +439,11 @@ func (c *Context) trace(node *Node) (err error) { // nolint: gocyclo
 					c.endParsing()
 				}
 
+				arg.Active = true
 				err := arg.Parse(c.scan, c.getValue(arg))
 				if err != nil {
 					return err
 				}
-				arg.Active = true
 				c.Path = append(c.Path, &Path{
 					Parent:     node,
 					Positional: arg,