diff --git a/awx/api/serializers.py b/awx/api/serializers.py
index 878b3c9cea..605cce8f2e 100644
--- a/awx/api/serializers.py
+++ b/awx/api/serializers.py
@@ -1203,7 +1203,6 @@ class InventoryScriptSerializer(InventorySerializer):
 
 class HostSerializer(BaseSerializerWithVariables):
     show_capabilities = ['edit', 'delete']
-    insights_system_id = serializers.CharField(allow_blank=True, allow_null=True, required=False, default=None)
 
     class Meta:
         model = Host