diff --git a/app/Http/Controllers/Json/ReconcileController.php b/app/Http/Controllers/Json/ReconcileController.php
index 763d306275..436fe0f347 100644
--- a/app/Http/Controllers/Json/ReconcileController.php
+++ b/app/Http/Controllers/Json/ReconcileController.php
@@ -81,6 +81,12 @@ class ReconcileController extends Controller
         if (!$start instanceof Carbon && !$end instanceof Carbon) {
             throw new FireflyException('Invalid dates submitted.');
         }
+        if(!is_numeric($startBalance)) {
+            $startBalance = '0';
+        }
+        if(!is_numeric($endBalance)) {
+            $endBalance = '0';
+    }
         if ($end->lt($start)) {
             [$start, $end] = [$end, $start];
         }