diff --git a/tests/Feature/TotalIncomeTest.php b/tests/Feature/TotalIncomeTest.php
index fd17273..9ee4e6a 100644
--- a/tests/Feature/TotalIncomeTest.php
+++ b/tests/Feature/TotalIncomeTest.php
@@ -28,7 +28,7 @@ public function it_returns_correct_value()
             }
             ')->assertJson([
                 'data' => [
-                    'totalIncome' => '{"value":133.0,"previous":0}'
+                    'totalIncome' => '{"value":"133.0","previous":0}'
                 ],
             ]);
     }