diff --git a/azurerm/internal/services/network/tests/resource_arm_web_application_firewall_policy_test.go b/azurerm/internal/services/network/tests/resource_arm_web_application_firewall_policy_test.go
index 589d2fbd5560..8df8d533dd92 100644
--- a/azurerm/internal/services/network/tests/resource_arm_web_application_firewall_policy_test.go
+++ b/azurerm/internal/services/network/tests/resource_arm_web_application_firewall_policy_test.go
@@ -244,6 +244,11 @@ resource "azurerm_web_application_firewall_policy" "test" {
       version = "3.1"
     }
   }
+
+  policy_settings {
+    enabled = true
+    mode    = "Detection"
+  }
 }
 `, data.RandomInteger, data.Locations.Primary, data.RandomInteger)
 }