diff --git a/src/spring-cloud/azext_spring_cloud/_validators_enterprise.py b/src/spring-cloud/azext_spring_cloud/_validators_enterprise.py
index c09d32b2db9..6369e5e767e 100644
--- a/src/spring-cloud/azext_spring_cloud/_validators_enterprise.py
+++ b/src/spring-cloud/azext_spring_cloud/_validators_enterprise.py
@@ -63,6 +63,8 @@ def validate_builder_update(cmd, namespace):
 def validate_builder_resource(namespace):
     if namespace.builder_json is not None and namespace.builder_file is not None:
         raise ClientRequestError("You can only specify either --builder-json or --builder-file.")
+    if namespace.builder_json is None and namespace.builder_file is None:
+        raise ClientRequestError("--builder-json or --builder-file is required.")
 
 
 def validate_build_pool_size(namespace):