diff --git a/helios/view_utils.py b/helios/view_utils.py
index f251054f4609aed1e1beff24f5b717e02934fdfc..1383b48068d95a567f603b636598c208f7aea73f 100644
--- a/helios/view_utils.py
+++ b/helios/view_utils.py
@@ -74,7 +74,7 @@ def render_template_raw(request, template_name, vars={}):
 
 
 def render_json(json_txt):
-  return HttpResponse(json_txt)
+  return HttpResponse(json_txt, "application/json")
 
 # decorator
 def json(func):
diff --git a/heliosbooth b/heliosbooth
index 81522f751f0eb3412ed3b3d1bad871ed4715554e..11a1a2fc0c4db87cfd1fa3cf566c0fbffd63cb7b 160000
--- a/heliosbooth
+++ b/heliosbooth
@@ -1 +1 @@
-Subproject commit 81522f751f0eb3412ed3b3d1bad871ed4715554e
+Subproject commit 11a1a2fc0c4db87cfd1fa3cf566c0fbffd63cb7b