diff --git a/library/Solarium/Core/Client/Adapter/Curl.php b/library/Solarium/Core/Client/Adapter/Curl.php
index a155cc4c8..5035d23e1 100644
--- a/library/Solarium/Core/Client/Adapter/Curl.php
+++ b/library/Solarium/Core/Client/Adapter/Curl.php
@@ -156,7 +156,11 @@ public function createHandle($request, $endpoint)
         }
 
         if (!isset($options['headers']['Content-Type'])) {
-            $options['headers']['Content-Type'] = 'text/xml; charset=utf-8';
+            if($method == Request::METHOD_GET){
+                $options['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=utf-8';
+            } else {
+                $options['headers']['Content-Type'] = 'application/xml; charset=utf-8';
+            }
         }
 
         // Try endpoint authentication first, fallback to request for backwards compatibility