diff --git a/aiohttp_apispec/decorators/response.py b/aiohttp_apispec/decorators/response.py
index df2f8ea..970cbba 100644
--- a/aiohttp_apispec/decorators/response.py
+++ b/aiohttp_apispec/decorators/response.py
@@ -33,7 +33,7 @@ def wrapper(func):
         func.__apispec__["responses"]["%s" % code] = {
             "schema": schema,
             "required": required,
-            "description": description,
+            "description": description or "",
         }
         return func