diff --git a/server/src/services/analytic_service/analytic_service.rs b/server/src/services/analytic_service/analytic_service.rs
index 7c007dd..b8dacdf 100644
--- a/server/src/services/analytic_service/analytic_service.rs
+++ b/server/src/services/analytic_service/analytic_service.rs
@@ -274,7 +274,6 @@ impl AnalyticService {
     }
 
     fn patch_config(&mut self, patch: PatchConfig, tx: oneshot::Sender<()>) {
-        
         let (new_conf, need_learning, same_type) = self.analytic_unit_config.patch(patch);
         self.analytic_unit_config = new_conf.clone();
         if need_learning {
diff --git a/server/src/services/analytic_service/analytic_unit/types.rs b/server/src/services/analytic_service/analytic_unit/types.rs
index 2ae8221..95f9b06 100644
--- a/server/src/services/analytic_service/analytic_unit/types.rs
+++ b/server/src/services/analytic_service/analytic_unit/types.rs
@@ -71,6 +71,7 @@ impl AnalyticUnitConfig {
                     if tcfg.is_some() {
                         return (AnalyticUnitConfig::Pattern(tcfg.unwrap()), false, true);
                     } else {
+                        // TODO: it should be extraced from db
                         return (AnalyticUnitConfig::Pattern(Default::default()), false, true);
                     }
                 }