diff --git a/src/Monitor/Monitor/ActivityLogAlert/SetAzureRmActivityLogAlertCommand.cs b/src/Monitor/Monitor/ActivityLogAlert/SetAzureRmActivityLogAlertCommand.cs
index 71a6c93f5249..f58dcb0d6931 100644
--- a/src/Monitor/Monitor/ActivityLogAlert/SetAzureRmActivityLogAlertCommand.cs
+++ b/src/Monitor/Monitor/ActivityLogAlert/SetAzureRmActivityLogAlertCommand.cs
@@ -150,7 +150,7 @@ protected override void ProcessRecordInternal()
                         resourceGroupName: out resourceGroupName,
                         activityLogAlertName: out activityLogAlertName);
 
-                    requestBody = this.UpdateActivityLogAlertResource(this.InputObject);
+                    requestBody = this.UpdateActivityLogAlertPsResource(this.InputObject);
                 }
                 else if (this.MyInvocation.BoundParameters.ContainsKey("ResourceId") || !string.IsNullOrWhiteSpace(this.ResourceId))
                 {
@@ -205,6 +205,23 @@ protected override void ProcessRecordInternal()
             }
         }
 
+        private ActivityLogAlertResource UpdateActivityLogAlertPsResource(PSActivityLogAlertResource inputObject)
+        {
+            var activityLogAlertResource = new ActivityLogAlertResource(
+                inputObject.Location,
+                inputObject.Scopes,
+                new ActivityLogAlertAllOfCondition(inputObject.Condition.AllOf.Select(e => new ActivityLogAlertLeafCondition(field: e.Field, equals: e.Equals)).ToList()), 
+                new ActivityLogAlertActionList(inputObject.Actions.ActionGroups.Select(e => new ActivityLogAlertActionGroup(actionGroupId: e.ActionGroupId, webhookProperties: e.WebhookProperties)).ToList()),
+                inputObject.Id,
+                inputObject.Name,
+                inputObject.Type,
+                inputObject.Tags,
+                inputObject.Enabled,
+                inputObject.Description);
+
+            return UpdateActivityLogAlertResource(activityLogAlertResource);
+        }
+
         private ActivityLogAlertResource UpdateActivityLogAlertResource(ActivityLogAlertResource requestBody)
         {
             // There was an ActivityLogAlert already there, just modify what can be modifed
diff --git a/src/Monitor/Monitor/ChangeLog.md b/src/Monitor/Monitor/ChangeLog.md
index c682d29be46c..b8e0908f445e 100644
--- a/src/Monitor/Monitor/ChangeLog.md
+++ b/src/Monitor/Monitor/ChangeLog.md
@@ -19,6 +19,7 @@
 -->
 
 ## Upcoming Release
+* Fixed input object parameter for `Set-AzActivityLogAlert`
 * Fixed bug for `Set-AzActionGroup`
 
 ## Version 2.0.0