diff --git a/services/121-service/src/registration/dto/duplicate.dto.ts b/services/121-service/src/registration/dto/duplicate.dto.ts
index 9d6f3f3cd1..0842add296 100644
--- a/services/121-service/src/registration/dto/duplicate.dto.ts
+++ b/services/121-service/src/registration/dto/duplicate.dto.ts
@@ -18,6 +18,6 @@ export class DuplicateDto {
   @ApiProperty({ example: ['phoneNumber'] })
   public readonly attributeNames: string[];
 
-  @ApiProperty({ example: 'true' })
+  @ApiProperty({ example: true })
   public readonly isDuplicateAccessibleWithinScope: boolean;
 }