diff --git a/app/lib/dal/sqliteDAL/DocumentDAL.ts b/app/lib/dal/sqliteDAL/DocumentDAL.ts
index d2097d7f025f31ee507e1b83051bfd36ca3f2f55..e5ce3c562c98d6f3830523d06a1b9fe67eb846b8 100644
--- a/app/lib/dal/sqliteDAL/DocumentDAL.ts
+++ b/app/lib/dal/sqliteDAL/DocumentDAL.ts
@@ -1,3 +1,3 @@
 export interface DBDocument {
-  issuers?: string[]
+  issuers: string[]
 }
\ No newline at end of file
diff --git a/app/lib/dal/sqliteDAL/SandBox.ts b/app/lib/dal/sqliteDAL/SandBox.ts
index 09431c3aada77ab98f4282737d0270eb5be85ff3..d8e9f3d96c7fa07438baf8cca9b117a549f63232 100644
--- a/app/lib/dal/sqliteDAL/SandBox.ts
+++ b/app/lib/dal/sqliteDAL/SandBox.ts
@@ -14,7 +14,7 @@ export class SandBox<T extends DBDocument> {
   
   async acceptNewSandBoxEntry(element:T, pubkey:string) {
     // Accept any document which has the exception pubkey (= the node pubkey)
-    if (element.issuers !== undefined && element.issuers.indexOf(pubkey) !== -1) {
+    if (element.issuers.indexOf(pubkey) !== -1) {
       return true;
     }
     const elements = await this.findElements()