diff --git a/lib/compat/wordpress-6.2/site-editor.php b/lib/compat/wordpress-6.2/site-editor.php
index b6246e49c6d11..37087fae3fb62 100644
--- a/lib/compat/wordpress-6.2/site-editor.php
+++ b/lib/compat/wordpress-6.2/site-editor.php
@@ -22,3 +22,24 @@ function gutenberg_site_editor_unset_homepage_setting( $settings, $context ) {
 	return $settings;
 }
 add_filter( 'block_editor_settings_all', 'gutenberg_site_editor_unset_homepage_setting', 10, 2 );
+
+/**
+ * Overrides the site editor initialization for WordPress 6.2 and cancels the redirection.
+ * The logic of this function is not important, we just need to remove the redirection from core.
+ *
+ * @param string $location Location.
+ *
+ * @return string Updated location.
+ */
+function gutenberg_prevent_site_editor_redirection( $location ) {
+	if ( strpos( $location, 'site-editor.php' ) !== false && strpos( $location, '?' ) !== false ) {
+		return add_query_arg(
+			array( 'postId' => 'none' ),
+			admin_url( 'site-editor.php' )
+		);
+	}
+
+	return $location;
+}
+
+add_filter( 'wp_redirect', 'gutenberg_prevent_site_editor_redirection', 1 );
diff --git a/lib/compat/wordpress-6.3/site-editor.php b/lib/compat/wordpress-6.3/site-editor.php
deleted file mode 100644
index 2cfde082554c4..0000000000000
--- a/lib/compat/wordpress-6.3/site-editor.php
+++ /dev/null
@@ -1,27 +0,0 @@
-<?php
-/**
- * Overrides the site editor initialization for WordPress 6.3.
- *
- * @package gutenberg
- */
-
-/**
- * Overrides the site editor initialization for WordPress 6.3 and cancels the redirection.
- * The logic of this function is not important, we just need to remove the redirection from core.
- *
- * @param string $location Location.
- *
- * @return string Updated location.
- */
-function gutenberg_prevent_site_editor_redirection( $location ) {
-	if ( strpos( $location, 'site-editor.php' ) !== false && strpos( $location, '?' ) !== false ) {
-		return add_query_arg(
-			array( 'postId' => 'none' ),
-			admin_url( 'site-editor.php' )
-		);
-	}
-
-	return $location;
-}
-
-add_filter( 'wp_redirect', 'gutenberg_prevent_site_editor_redirection', 1 );
diff --git a/lib/load.php b/lib/load.php
index 75d77f83b74fa..fb9da083390d4 100644
--- a/lib/load.php
+++ b/lib/load.php
@@ -91,9 +91,6 @@ function gutenberg_is_experiment_enabled( $name ) {
 require __DIR__ . '/compat/wordpress-6.2/theme.php';
 require __DIR__ . '/compat/wordpress-6.2/widgets.php';
 
-// WordPress 6.3 compat.
-require __DIR__ . '/compat/wordpress-6.3/site-editor.php';
-
 // Experimental features.
 remove_action( 'plugins_loaded', '_wp_theme_json_webfonts_handler' ); // Turns off WP 6.0's stopgap handler for Webfonts API.
 require __DIR__ . '/experimental/block-editor-settings-mobile.php';