diff --git a/symfony/console/3.3/bin/console b/symfony/console/3.3/bin/console
index 14932be6..5187d027 100755
--- a/symfony/console/3.3/bin/console
+++ b/symfony/console/3.3/bin/console
@@ -24,7 +24,7 @@ if (!isset($_SERVER['APP_ENV'])) {
 
 $input = new ArgvInput();
 $env = $input->getParameterOption(['--env', '-e'], $_SERVER['APP_ENV'] ?? 'dev', true);
-$debug = ($_SERVER['APP_DEBUG'] ?? ('prod' !== $env)) && !$input->hasParameterOption('--no-debug', true);
+$debug = (bool) ($_SERVER['APP_DEBUG'] ?? ('prod' !== $env)) && !$input->hasParameterOption('--no-debug', true);
 
 if ($debug) {
     umask(0000);
diff --git a/symfony/framework-bundle/3.3/public/index.php b/symfony/framework-bundle/3.3/public/index.php
index ab41c26e..e173fb9d 100644
--- a/symfony/framework-bundle/3.3/public/index.php
+++ b/symfony/framework-bundle/3.3/public/index.php
@@ -16,7 +16,7 @@ if (!isset($_SERVER['APP_ENV'])) {
 }
 
 $env = $_SERVER['APP_ENV'] ?? 'dev';
-$debug = $_SERVER['APP_DEBUG'] ?? ('prod' !== $env);
+$debug = (bool) $_SERVER['APP_DEBUG'] ?? ('prod' !== $env);
 
 if ($debug) {
     umask(0000);