diff --git a/src/caj/helper/storage/appData.ts b/src/caj/helper/storage/appData.ts
index 18a451a..ff1838e 100644
--- a/src/caj/helper/storage/appData.ts
+++ b/src/caj/helper/storage/appData.ts
@@ -1,7 +1,12 @@
 import EncryptedStorage from 'react-native-encrypted-storage';
 
 export async function getData(key: string): Promise<string | null> {
-  return EncryptedStorage.getItem(key);
+  return new Promise((resolve, reject) => {
+    EncryptedStorage.getItem(key).then(value => {
+      if (value === undefined) resolve(null);
+      else resolve(value);
+    });
+  });
 }
 
 export async function setData(key: string, value: string): Promise<void> {