diff --git a/src/entity/schedule_series.ts b/src/entity/schedule_series.ts
index 4c2490e..f361d7a 100644
--- a/src/entity/schedule_series.ts
+++ b/src/entity/schedule_series.ts
@@ -50,7 +50,7 @@ export class ScheduleSeries {
     @Column({ type: "time", nullable: false })
     end_time_local: string;
 
-    @Column({ nullable: false, type: "text" })
+    @Column({ nullable: true, type: "text" })
     recurrence_rule: string;
 
     @Column({