diff --git a/src/app/app.py b/src/app/app.py
index e6f953a..e16a279 100644
--- a/src/app/app.py
+++ b/src/app/app.py
@@ -127,8 +127,10 @@ class BaseApplication(RPCApplication):
         return await handler(request)
 
     async def render_template(self, name, request=None, context=None):
-        return aiohttp_jinja2.render_template(name, request, context)
-
+        response = aiohttp_jinja2.render_template(name, request, context)
+        response.headers['Content-Type'] = 'text/html'
+        return response 
+    
     @web.middleware
     async def request_middleware(self, request: web.Request, handler):
         time_start = time.time()