diff --git a/app/asr_engine.py b/app/asr_engine.py
index 55f9c22..fcc168d 100644
--- a/app/asr_engine.py
+++ b/app/asr_engine.py
@@ -4,7 +4,7 @@ from ahserver.serverenv import ServerEnv
 from aiohttp.web import StreamResponse
 
 async def generate(request, **kw):
-	params_kw = kw.get(params_kw, DictObject())
+	params_kw = kw.get('params_kw', DictObject())
 	model = params_kw.model
 	engine = None
 	g = ServerEnv()