diff --git a/StructuredDynamics/osf/ws/sparql/interfaces/DefaultSourceInterface.php b/StructuredDynamics/osf/ws/sparql/interfaces/DefaultSourceInterface.php
index e604425..93d17fe 100644
--- a/StructuredDynamics/osf/ws/sparql/interfaces/DefaultSourceInterface.php
+++ b/StructuredDynamics/osf/ws/sparql/interfaces/DefaultSourceInterface.php
@@ -401,7 +401,7 @@ public function processInterface()
           
           if($return = $this->ws->memcached->get($key))
           {
-            if($queryFormat !== 'application/sparql-results+xml')
+            if($queryFormat !== 'application/sparql-results+xml' || $this->ws->conneg->getMime() === 'application/sparql-results+xml')
             {
               $this->ws->sparqlContent = $return;
             }