diff --git a/chaos_genius/views/anomaly_data_view.py b/chaos_genius/views/anomaly_data_view.py
index bc3ffc29..fc2266ea 100644
--- a/chaos_genius/views/anomaly_data_view.py
+++ b/chaos_genius/views/anomaly_data_view.py
@@ -272,7 +272,7 @@ def kpi_anomaly_params(kpi_id: int):
         )
 
     err, new_anomaly_params = validate_partial_anomaly_params(
-        req_data["anomaly_params"]
+        req_data["anomaly_params"] is None
     )
 
     if err != "":