diff --git a/app/Http/Controllers/TagController.php b/app/Http/Controllers/TagController.php
index a036a1b754..f28ff3549f 100644
--- a/app/Http/Controllers/TagController.php
+++ b/app/Http/Controllers/TagController.php
@@ -154,12 +154,18 @@ class TagController extends Controller
      */
     public function index(TagRepositoryInterface $repository)
     {
-        // start with oldest tag
+        // start with the oldest tag
         $first           = session('first', today()) ?? today();
         $oldestTagDate   = $repository->oldestTag() instanceof Tag ? $repository->oldestTag()->date : clone $first;
         $newestTagDate   = $repository->newestTag() instanceof Tag ? $repository->newestTag()->date : today();
         $oldestTagDate->startOfYear();
         $newestTagDate->endOfYear();
+
+        if($oldestTagDate->year < 1970) {
+            $oldestTagDate = Carbon::create(1970, 1, 1, 0, 0, 0, config('app.timezone'));
+            request()->session()->flash('error', trans('firefly.bad_date_transaction'));
+        }
+
         $tags            = [];
         $tags['no-date'] = $repository->getTagsInYear(null);