diff --git a/app/Http/Controllers/Chart/ReportController.php b/app/Http/Controllers/Chart/ReportController.php
index 76f0c8475b..d1d62ba9f5 100644
--- a/app/Http/Controllers/Chart/ReportController.php
+++ b/app/Http/Controllers/Chart/ReportController.php
@@ -112,7 +112,7 @@ class ReportController extends Controller
             $date               = $currentStart->format('Y-m');
             $spent              = $repository->spentInPeriod($accounts, $currentStart, $currentEnd);
             $earned             = $repository->earnedInPeriod($accounts, $currentStart, $currentEnd);
-            $spentArray[$date]  = $spent;
+            $spentArray[$date]  = bcmul($spent, '-1');
             $earnedArray[$date] = $earned;
             $currentStart       = Navigation::addPeriod($currentStart, '1M', 0);
         }
@@ -163,7 +163,7 @@ class ReportController extends Controller
             $date               = $currentStart->format('Y-m');
             $spent              = $repository->spentInPeriod($accounts, $currentStart, $currentEnd);
             $earned             = $repository->earnedInPeriod($accounts, $currentStart, $currentEnd);
-            $spentArray[$date]  = $spent;
+            $spentArray[$date]  = bcmul($spent, '-1');
             $earnedArray[$date] = $earned;
             $currentStart       = Navigation::addPeriod($currentStart, '1M', 0);
         }