diff --git a/app/services/saml_request_validator.rb b/app/services/saml_request_validator.rb
index 2b21aadc0bc..4eee8790492 100644
--- a/app/services/saml_request_validator.rb
+++ b/app/services/saml_request_validator.rb
@@ -43,7 +43,7 @@ def parsed_vectors_of_trust
     return @parsed_vectors_of_trust if defined?(@parsed_vectors_of_trust)
 
     @parsed_vectors_of_trust = begin
-      if vtr.is_a?(Array) && !vtr.empty?
+      if vtr.present?
         vtr.map { |vot| Vot::Parser.new(vector_of_trust: vot).parse }
       end
     rescue Vot::Parser::ParseException