diff --git a/workflow/engine/src/ProcessMaker/Services/Api/Project.php b/workflow/engine/src/ProcessMaker/Services/Api/Project.php
index 0cc1147e2..685222964 100644
--- a/workflow/engine/src/ProcessMaker/Services/Api/Project.php
+++ b/workflow/engine/src/ProcessMaker/Services/Api/Project.php
@@ -117,7 +117,7 @@ class Project extends Api
         $fileExtension = pathinfo($outputFilename, PATHINFO_EXTENSION);
 
         $httpStream->loadFromFile($outputFilename);
-        $httpStream->setHeader("Content-Type", "application/$fileExtension");
+        $httpStream->setHeader("Content-Type", "application/xml; charset=UTF-8");
         $httpStream->send();
     }