diff --git a/server/src/services/analytic_service/analytic_unit/pattern_analytic_unit.rs b/server/src/services/analytic_service/analytic_unit/pattern_analytic_unit.rs
index c11a02c..c8ecbe1 100644
--- a/server/src/services/analytic_service/analytic_unit/pattern_analytic_unit.rs
+++ b/server/src/services/analytic_service/analytic_unit/pattern_analytic_unit.rs
@@ -287,6 +287,10 @@ impl AnalyticUnit for PatternAnalyticUnit {
             }
         }
 
+        if learn_tss.len() == 0 {
+            return LearningResult::FinishedEmpty;
+        }
+
         let mut patterns = Vec::<Vec<f64>>::new();
         let mut anti_patterns = Vec::<Vec<f64>>::new();
 
diff --git a/server/src/services/analytic_service/detection_runner.rs b/server/src/services/analytic_service/detection_runner.rs
index 4f819f9..9fd8956 100644
--- a/server/src/services/analytic_service/detection_runner.rs
+++ b/server/src/services/analytic_service/detection_runner.rs
@@ -22,6 +22,8 @@ impl DetectionRunner {
     }
 
     pub async fn run() {
-
+      // TODO: await detection step
+      // TODO: get last detection timestamp from persistance
+      // TODO: set lst detection from "now"
     }
 }