diff --git a/app/apis/home_assistant_calendar_api.rb b/app/apis/home_assistant_calendar_api.rb
index 6b2a684..7a181cc 100644
--- a/app/apis/home_assistant_calendar_api.rb
+++ b/app/apis/home_assistant_calendar_api.rb
@@ -41,7 +41,7 @@ def fetch
       out.concat(res)
     end
 
-    save_response(out)
+    save_response(out.compact)
   end
 
   def prepare_response(response)