diff --git a/src/entity/patient_guarantor.ts b/src/entity/patient_guarantor.ts
index 24c3fe6..38d802c 100644
--- a/src/entity/patient_guarantor.ts
+++ b/src/entity/patient_guarantor.ts
@@ -49,7 +49,7 @@ export class PatientGuarantor {
   @JoinColumn({ name: "patient_group_id" })
   patient_group!: PatientGroup;
 
-  @ManyToOne(() => FareType, { nullable: false })
+  @ManyToOne(() => FareType, { nullable: true })
   @JoinColumn()
   faretype!: FareType;