diff --git a/internal/api/controller/webhook/common.go b/internal/api/controller/webhook/common.go
index 2c144864f..459fc5d84 100644
--- a/internal/api/controller/webhook/common.go
+++ b/internal/api/controller/webhook/common.go
@@ -40,9 +40,9 @@ func checkURL(rawURL string, allowLoopback bool, allowPrivateNetwork bool) error
 	// basic validation for loopback / private network addresses (only sanitary to give user an early error)
 	// IMPORTANT: during webook execution loopback / private network addresses are blocked (handles DNS resolution)
 	//
-	//if host == "localhost" {
-	//	return check.NewValidationError("localhost is not allowed.")
-	//}
+	if host == "localhost" {
+		return check.NewValidationError("localhost is not allowed.")
+	}
 
 	if ip := net.ParseIP(host); ip != nil {
 		if !allowLoopback && ip.IsLoopback() {