diff --git a/lib/storage/providers/IDBKeyVal.js b/lib/storage/providers/IDBKeyVal.js
index 5983b5b1..1b13592f 100644
--- a/lib/storage/providers/IDBKeyVal.js
+++ b/lib/storage/providers/IDBKeyVal.js
@@ -102,7 +102,10 @@ const provider = {
      * @param {String} key
      * @return {Promise<*>}
      */
-    getItem: key => get(key, getCustomStore()),
+    getItem: key => get(key, getCustomStore())
+
+        // idb-keyval returns undefined for missing items, but this needs to return null so that idb-keyval does the same thing as SQLiteStorage.
+        .then(val => (val === undefined ? null : val)),
 
     /**
      * Remove given key and it's value from storage