diff --git a/app/Http/Controllers/StructureController.php b/app/Http/Controllers/StructureController.php
index c22f17ae5..e1232f428 100644
--- a/app/Http/Controllers/StructureController.php
+++ b/app/Http/Controllers/StructureController.php
@@ -43,7 +43,7 @@ class StructureController extends Controller
             'thisMonthRevRefinery' => number_format($this->GetRevenue($corpId, 'Refinery', $dates['ThisMonthStart'], $dates['ThisMonthEnd']), 2, '.', ','),
             'lastMonthRevMarket' => number_format($this->GetRevenue($corpId, 'Market', $dates['LastMonthStart'], $dates['LastMonthEnd']), 2, '.', ','),
             'lastMonthRevRefinery' => number_format($this->GetRevenue($corpId, 'Refinery', $dates['LastMonthStart'], $dates['LastMonthEnd']), 2, '.', ','),
-            'thisMonthStart' => $dates['ThisMonthStart']->month(),
+            'thisMonthStart' => $dates['ThisMonthStart']->toRssString()->month,
             'thisMonthEnd' => $dates['ThisMonthEnd'],
             'lastMonthStart' => $dates['LastMonthStart'],
             'lastMonthEnd' => $dates['LastMonthEnd'],