diff --git a/lib/electrumx_rpc/cached_electrumx.dart b/lib/electrumx_rpc/cached_electrumx.dart
index a8136dcaf..3bce4a910 100644
--- a/lib/electrumx_rpc/cached_electrumx.dart
+++ b/lib/electrumx_rpc/cached_electrumx.dart
@@ -9,6 +9,7 @@
  */
 
 import 'dart:convert';
+import 'dart:math';
 
 import 'package:stackwallet/db/hive/db.dart';
 import 'package:stackwallet/electrumx_rpc/electrumx.dart';
@@ -167,8 +168,10 @@ class CachedElectrumX {
       Set<String> cachedSerials =
           _list == null ? {} : List<String>.from(_list).toSet();
 
-      final startNumber =
-          cachedSerials.length - 10; // 10 being some arbitrary buffer
+      startNumber = max(
+        max(0, startNumber),
+        cachedSerials.length - 100, // 100 being some arbitrary buffer
+      );
 
       final serials = await electrumXClient.getUsedCoinSerials(
         startNumber: startNumber,