diff --git a/app/routes/admin.sports-seasons.$id.events.$eventId.server.ts b/app/routes/admin.sports-seasons.$id.events.$eventId.server.ts
index a09187a..1288c0d 100644
--- a/app/routes/admin.sports-seasons.$id.events.$eventId.server.ts
+++ b/app/routes/admin.sports-seasons.$id.events.$eventId.server.ts
@@ -374,7 +374,7 @@ export async function action({ request, params }: Route.ActionArgs) {
       return { error: "Participant name is required" };
     }
 
-    if (typeof sportsSeasonId !== "string" || !sportsSeasonId) {
+    if (typeof sportsSeasonId !== "string" || !sportsSeasonId.trim()) {
       return { error: "Sports season ID is required" };
     }