diff --git a/runtime/observatory/analysis_options.yaml b/runtime/observatory/analysis_options.yaml
index a177d9215db9..3ec7588f37ef 100644
--- a/runtime/observatory/analysis_options.yaml
+++ b/runtime/observatory/analysis_options.yaml
@@ -3,7 +3,6 @@ analyzer:
     dead_code: info
     getter_not_subtype_setter_types: info
     missing_enum_constant_in_switch: info
-    nullable_argument_to_non_null_type: info
     unused_element: info
     unused_field: info
     unused_import: info