diff --git a/phpstan-baseline.neon b/phpstan-baseline.neon
index f94fe5992b..4191f423dd 100644
--- a/phpstan-baseline.neon
+++ b/phpstan-baseline.neon
@@ -8245,11 +8245,6 @@ parameters:
 			count: 1
 			path: src/Core.php
 
-		-
-			message: "#^Call to function in_array\\(\\) requires parameter \\#3 to be set\\.$#"
-			count: 3
-			path: src/Core.php
-
 		-
 			message: "#^Cannot access offset string on mixed\\.$#"
 			count: 8
diff --git a/src/Core.php b/src/Core.php
index 4f08043ae0..53ad31f51e 100644
--- a/src/Core.php
+++ b/src/Core.php
@@ -157,37 +157,25 @@ class Core
     }
 
     /**
-     * Checks given $page against given $allowList and returns true if valid
-     * it optionally ignores query parameters in $page (script.php?ignored)
-     *
-     * @param string  $page      page to check
-     * @param mixed[] $allowList allow list to check page against
-     * @param bool    $include   whether the page is going to be included
+     * Checks if the given $page is index.php and returns true if valid.
+     * It ignores query parameters in $page (script.php?ignored)
      */
-    public static function checkPageValidity(string $page, array $allowList = [], bool $include = false): bool
+    public static function checkPageValidity(string $page): bool
     {
-        if ($allowList === []) {
-            $allowList = ['index.php'];
-        }
-
         if ($page === '') {
             return false;
         }
 
-        if (in_array($page, $allowList)) {
+        if ($page === 'index.php') {
             return true;
         }
 
-        if ($include) {
-            return false;
-        }
-
         $newPage = mb_substr(
             $page,
             0,
             (int) mb_strpos($page . '?', '?'),
         );
-        if (in_array($newPage, $allowList)) {
+        if ($newPage === 'index.php') {
             return true;
         }
 
@@ -198,7 +186,7 @@ class Core
             (int) mb_strpos($newPage . '?', '?'),
         );
 
-        return in_array($newPage, $allowList);
+        return $newPage === 'index.php';
     }
 
     /**
diff --git a/tests/classes/CoreTest.php b/tests/classes/CoreTest.php
index 0f0a0c7668..c5a2ce6ce7 100644
--- a/tests/classes/CoreTest.php
+++ b/tests/classes/CoreTest.php
@@ -237,33 +237,29 @@ class CoreTest extends AbstractTestCase
     /**
      * Test for Core::checkPageValidity
      *
-     * @param string   $page      Page
-     * @param string[] $allowList Allow list
-     * @param bool     $include   whether the page is going to be included
-     * @param bool     $expected  Expected value
+     * @param string $page     Page
+     * @param bool   $expected Expected value
      */
     #[DataProvider('providerTestGotoNowhere')]
-    public function testGotoNowhere(string $page, array $allowList, bool $include, bool $expected): void
+    public function testGotoNowhere(string $page, bool $expected): void
     {
-        $this->assertSame($expected, Core::checkPageValidity($page, $allowList, $include));
+        $this->assertSame($expected, Core::checkPageValidity($page));
     }
 
     /**
      * Data provider for testGotoNowhere
      *
-     * @return array<array{string, string[], bool, bool}>
+     * @return array<array{string, bool}>
      */
     public static function providerTestGotoNowhere(): array
     {
         return [
-            ['', [], false, false],
-            ['', [], true, false],
-            ['shell.php', ['index.php'], false, false],
-            ['shell.php', ['index.php'], true, false],
-            ['index.php?sql.php&test=true', ['index.php'], false, true],
-            ['index.php?sql.php&test=true', ['index.php'], true, false],
-            ['index.php%3Fsql.php%26test%3Dtrue', ['index.php'], false, true],
-            ['index.php%3Fsql.php%26test%3Dtrue', ['index.php'], true, false],
+            ['', false],
+            ['shell.php', false],
+            ['index.php?sql.php&test=true', true],
+            ['shell.php?sql.php&test=true', false],
+            ['index.php%3Fsql.php%26test%3Dtrue', true],
+            ['shell.php%3Fsql.php%26test%3Dtrue', false],
         ];
     }