diff --git a/src/data/valid/Database-study-set-with-dois.yaml b/src/data/valid/Database-study-set-with-dois.yaml
index 377299521d..dc2acc3501 100644
--- a/src/data/valid/Database-study-set-with-dois.yaml
+++ b/src/data/valid/Database-study-set-with-dois.yaml
@@ -1,5 +1,6 @@
 study_set:
   - id: nmdc:sty-99-FkQIsc
+    initiative_type: study
     gold_study_identifiers:
       - GOLD:Gs0128849
     name: Permafrost microbial communities from Stordalen Mire, Sweden