diff --git a/azurerm/internal/services/network/tests/application_gateway_resource_test.go b/azurerm/internal/services/network/tests/application_gateway_resource_test.go
index b9928ef875c6..23e808d0ffb6 100644
--- a/azurerm/internal/services/network/tests/application_gateway_resource_test.go
+++ b/azurerm/internal/services/network/tests/application_gateway_resource_test.go
@@ -2027,7 +2027,7 @@ resource "azurerm_web_application_firewall_policy" "testfwp" {
   resource_group_name = azurerm_resource_group.test.name
   location            = azurerm_resource_group.test.location
 
-  policy_setting {
+  policy_settings {
     enabled = true
     mode    = "Prevention"
   }