diff -r f851ec12812f -r c0e8626a271c server/src/app/Models/Document.php
--- a/server/src/app/Models/Document.php	Sat Mar 05 08:49:17 2016 +0100
+++ b/server/src/app/Models/Document.php	Sun Mar 06 00:29:01 2016 +0100
@@ -349,11 +349,13 @@
         //put new
         foreach ($subjects as $newSubject) {
             $value = null;
-            if(filter_var($newSubject, FILTER_VALIDATE_URL)) {
+            if(is_string($newSubject) && filter_var($newSubject, FILTER_VALIDATE_URL)) {
                 $value = new Resource($newSubject);
             }
-            else {
-                $value = new Literal($newSubject, "fr", null);
+            elseif (is_string($newSubject)) {
+                $value = new Literal($newSubject, null, null);
+            } elseif(is_array($newSubject)) {
+                $value = new Literal(isset($newSubject['value'])?$newSubject['value']:null, isset($newSubject['lang'])?$newSubject['lang']:null, isset($newSubject['datatype'])?$newSubject['value']:null);
             }
 
             $this->getProvidedCHO()->add('http://purl.org/dc/elements/1.1/subject', $value);