diff --git a/homeassistant/components/frontend/__init__.py b/homeassistant/components/frontend/__init__.py
index 112c93403b0..1820dcdc3f6 100644
--- a/homeassistant/components/frontend/__init__.py
+++ b/homeassistant/components/frontend/__init__.py
@@ -329,6 +329,7 @@ class IndexView(HomeAssistantView):
         from jinja2 import FileSystemLoader, Environment
 
         self.templates = Environment(
+            autoescape=True,
             loader=FileSystemLoader(
                 os.path.join(os.path.dirname(__file__), 'templates/')
             )