diff --git a/app/Mage.php b/app/Mage.php
index c305e38b929..321c410a477 100644
--- a/app/Mage.php
+++ b/app/Mage.php
@@ -27,7 +27,7 @@
 
 if (!empty($_SERVER['MAGE_IS_DEVELOPER_MODE']) || !empty($_ENV['MAGE_IS_DEVELOPER_MODE'])) {
     Mage::setIsDeveloperMode(true);
-    ini_set('display_errors', 1);
+    ini_set('display_errors', '1');
     ini_set('error_prepend_string', '<pre>');
     ini_set('error_append_string', '</pre>');
 }
@@ -455,7 +455,7 @@ public static function getDesign()
     /**
      * Retrieve a config instance
      *
-     * @return Mage_Core_Model_Config
+     * @return Mage_Core_Model_Config|null
      */
     public static function getConfig()
     {
diff --git a/phpstan.dist.baseline.neon b/phpstan.dist.baseline.neon
index 6e3c6963e99..675d7ec6675 100644
--- a/phpstan.dist.baseline.neon
+++ b/phpstan.dist.baseline.neon
@@ -5,16 +5,6 @@ parameters:
 			count: 1
 			path: app/Mage.php
 
-		-
-			message: "#^Negated boolean expression is always false\\.$#"
-			count: 2
-			path: app/Mage.php
-
-		-
-			message: "#^Parameter \\#2 \\$value of function ini_set expects string, int given\\.$#"
-			count: 1
-			path: app/Mage.php
-
 		-
 			message: "#^Right side of && is always false\\.$#"
 			count: 1