diff --git a/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2019-01-01-preview/SecurityInsights.json b/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2019-01-01-preview/SecurityInsights.json
index 734b897828b9..1261ee918c21 100644
--- a/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2019-01-01-preview/SecurityInsights.json
+++ b/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2019-01-01-preview/SecurityInsights.json
@@ -4870,8 +4870,7 @@
             "MicrosoftSecurityIncidentCreation",
             "Fusion",
             "MLBehaviorAnalytics",
-            "ThreatIntelligence",
-            "Anomaly"
+            "ThreatIntelligence"
           ],
           "type": "string",
           "x-ms-enum": {
@@ -4892,9 +4891,6 @@
               },
               {
                 "value": "ThreatIntelligence"
-              },
-              {
-                "value": "Anomaly"
               }
             ]
           }