diff --git a/src/main/scala/app/ControllerBase.scala b/src/main/scala/app/ControllerBase.scala
index 9b6b8df..11c0d8b 100644
--- a/src/main/scala/app/ControllerBase.scala
+++ b/src/main/scala/app/ControllerBase.scala
@@ -22,9 +22,8 @@
 
   implicit val jsonFormats = DefaultFormats
 
-//  before() {
-//    contentType = "text/html"
-//  }
+  // Don't set content type via Accept header.
+  override def format(implicit request: HttpServletRequest) = ""
 
   override def doFilter(request: ServletRequest, response: ServletResponse, chain: FilterChain) {
     val httpRequest  = request.asInstanceOf[HttpServletRequest]