diff --git a/queries/analytics/session/createSession.ts b/queries/analytics/session/createSession.ts
index 7286cb97..4014ac41 100644
--- a/queries/analytics/session/createSession.ts
+++ b/queries/analytics/session/createSession.ts
@@ -44,7 +44,7 @@ async function relationalQuery(data: Prisma.SessionCreateInput) {
       screen,
       language,
       country,
-      subdivision1: country.concat('-', subdivision1),
+      subdivision1: subdivision1 ? country.concat('-', subdivision1) : null,
       subdivision2,
       city,
     },