diff --git a/lib/onelogin/saml/response.rb b/lib/onelogin/saml/response.rb
index eed781326..ebaf9b454 100644
--- a/lib/onelogin/saml/response.rb
+++ b/lib/onelogin/saml/response.rb
@@ -48,7 +48,12 @@ def attributes
           name  = attr_element.attributes["Name"]
           value = attr_element.elements.first.text
 
-          result[name] = value
+          result[name] =
+            if result[name]
+              ([value] << result[name]).flatten
+            else
+              value
+            end
         end
 
         result.keys.each do |key|