diff --git a/detection_rules/rule.py b/detection_rules/rule.py
index 1ac6f7a4e..605b9157f 100644
--- a/detection_rules/rule.py
+++ b/detection_rules/rule.py
@@ -595,8 +595,11 @@ class QueryValidator:
         raise NotImplementedError()
 
     @cached
-    def get_required_fields(self, index: str) -> List[dict]:
+    def get_required_fields(self, index: str) -> List[Optional[dict]]:
         """Retrieves fields needed for the query along with type information from the schema."""
+        if isinstance(self, ESQLValidator):
+            return []
+
         current_version = Version.parse(load_current_package_version(), optional_minor_and_patch=True)
         ecs_version = get_stack_schemas()[str(current_version)]['ecs']
         beats_version = get_stack_schemas()[str(current_version)]['beats']