diff --git a/vlib/net/ftp/ftp.v b/vlib/net/ftp/ftp.v
index 3c4b34cc47..3706d15d3f 100644
--- a/vlib/net/ftp/ftp.v
+++ b/vlib/net/ftp/ftp.v
@@ -223,8 +223,9 @@ fn (ftp FTP) pasv() ?DTP {
 		return error('pasive mode not allowed')
 	}
 
-	dtp := new_dtp(data)
-
+	dtp := new_dtp(data) or {
+	   return error(err)
+	}
 	return dtp
 }
 
diff --git a/vlib/v/ast/str.v b/vlib/v/ast/str.v
index d6317f0eb0..6a077ee760 100644
--- a/vlib/v/ast/str.v
+++ b/vlib/v/ast/str.v
@@ -133,6 +133,9 @@ pub fn (x Expr) str() string {
 		SelectorExpr {
 			return '${it.expr.str()}.${it.field}'
 		}
+		TypeOf {
+			return 'typeof(${it.expr.str()})'
+		}
 		CallExpr {
 			sargs := args2str(it.args)
 			if it.is_method {