diff --git a/chaos_genius/core/anomaly/controller.py b/chaos_genius/core/anomaly/controller.py
index 717e6ece6..0f52c824e 100644
--- a/chaos_genius/core/anomaly/controller.py
+++ b/chaos_genius/core/anomaly/controller.py
@@ -76,7 +76,11 @@ def __init__(
             self.debug = True
         if self.debug == "False":
             self.debug = False
-        self.slack = MAX_ANOMALY_SLACK_DAYS
+        self.slack = (
+            MAX_ANOMALY_SLACK_DAYS * 24
+            if self.kpi_info["anomaly_params"]["frequency"] == "H"
+            else MAX_ANOMALY_SLACK_DAYS
+        )
 
         if self.kpi_info["anomaly_params"]["frequency"] == "H":
             period = int(self.kpi_info["anomaly_params"]["anomaly_period"]) * 24