diff --git a/src/socketify/asgi.py b/src/socketify/asgi.py
index 750b11f..3ed9449 100644
--- a/src/socketify/asgi.py
+++ b/src/socketify/asgi.py
@@ -618,7 +618,6 @@ class _ASGI:
 
     def run(self):
         if not self.lifespan:
-            print("No lifespan!")
             self.server.run()  
             return self
 
@@ -742,6 +741,7 @@ class ASGI:
                 self.websocket,
                 self.websocket_options,
                 self.task_factory_max_items,
+                self.lifespan
             )
             if self.listen_options:
                 (port_or_options, handler) = self.listen_options
diff --git a/src/socketify/wsgi.py b/src/socketify/wsgi.py
index 1bcb105..9732305 100644
--- a/src/socketify/wsgi.py
+++ b/src/socketify/wsgi.py
@@ -152,7 +152,7 @@ def wsgi(ssl, response, info, user_data, aborted):
         environ[f"HTTP_{name.replace('-', '_').upper()}"] = value
         next_header = ffi.cast("socketify_header*", next_header.next)
 
-    environ["CONTENT_TYPE"] = environ.get("HTTP_CONTENT_TYPE", None)
+    environ["CONTENT_TYPE"] = environ.get("HTTP_CONTENT_TYPE", "")
 
     def start_response(status, headers):
         if isinstance(status, str):