diff --git a/backend/public/index.php b/backend/public/index.php
index 9982c21..db42f9e 100755
--- a/backend/public/index.php
+++ b/backend/public/index.php
@@ -1,4 +1,5 @@
 <?php
+const E_STRICT = 1;
 
 use App\Kernel;