diff --git a/modules/database/sqlite/constants.php b/modules/database/sqlite/constants.php
new file mode 100644
index 0000000000..bc93784896
--- /dev/null
+++ b/modules/database/sqlite/constants.php
@@ -0,0 +1,46 @@
+<?php
+/**
+ * Define constants for the SQLite implementation.
+ *
+ * @since n.e.x.t
+ * @package performance-lab
+ */
+
+// Temporary - This will be in wp-config.php once SQLite is merged in Core.
+if ( ! defined( 'DATABASE_TYPE' ) ) {
+	define( 'DATABASE_TYPE', 'sqlite' );
+}
+
+/**
+ * Notice:
+ * Your scripts have the permission to create directories or files on your server.
+ * If you write in your wp-config.php like below, we take these definitions.
+ * define('DB_DIR', '/full_path_to_the_database_directory/');
+ * define('DB_FILE', 'database_file_name');
+ */
+
+/**
+ * FQDBDIR is a directory where the sqlite database file is placed.
+ * If DB_DIR is defined, it is used as FQDBDIR.
+ */
+if ( ! defined( 'FQDBDIR' ) ) {
+	if ( defined( 'DB_DIR' ) ) {
+		define( 'FQDBDIR', trailingslashit( DB_DIR ) );
+	} elseif ( defined( 'WP_CONTENT_DIR' ) ) {
+		define( 'FQDBDIR', WP_CONTENT_DIR . '/database/' );
+	} else {
+		define( 'FQDBDIR', ABSPATH . 'wp-content/database/' );
+	}
+}
+
+/**
+ * FQDB is a database file name. If DB_FILE is defined, it is used
+ * as FQDB.
+ */
+if ( ! defined( 'FQDB' ) ) {
+	if ( defined( 'DB_FILE' ) ) {
+		define( 'FQDB', FQDBDIR . DB_FILE );
+	} else {
+		define( 'FQDB', FQDBDIR . '.ht.sqlite' );
+	}
+}
diff --git a/modules/database/sqlite/load.php b/modules/database/sqlite/load.php
index fec4ff637b..33c6d48d4b 100644
--- a/modules/database/sqlite/load.php
+++ b/modules/database/sqlite/load.php
@@ -8,10 +8,8 @@
  * @since n.e.x.t
  */
 
-// Temporary - This will be in wp-config.php once SQLite is merged in Core.
-if ( ! defined( 'DATABASE_TYPE' ) ) {
-	define( 'DATABASE_TYPE', 'sqlite' );
-}
+// Require the constants file.
+require_once __DIR__ . '/constants.php';
 
 /**
  * Adds the db.php file in wp-content.
diff --git a/modules/database/sqlite/wp-includes/sqlite/db.php b/modules/database/sqlite/wp-includes/sqlite/db.php
index 49606e914b..67ecedb52e 100644
--- a/modules/database/sqlite/wp-includes/sqlite/db.php
+++ b/modules/database/sqlite/wp-includes/sqlite/db.php
@@ -6,6 +6,9 @@
  * @since n.e.x.t
  */
 
+// Require the constants file.
+require_once dirname( dirname( __DIR__ ) ) . '/constants.php';
+
 // Bail early if DATABASE_TYPE is not defined as sqlite.
 if ( ! defined( 'DATABASE_TYPE' ) || 'sqlite' !== DATABASE_TYPE ) {
 	return;
@@ -57,36 +60,6 @@ function perflab_sqlite_pdo_log_error( $message, $data = null ) {
 	);
 }
 
-/**
- * Notice:
- * Your scripts have the permission to create directories or files on your server.
- * If you write in your wp-config.php like below, we take these definitions.
- * define('DB_DIR', '/full_path_to_the_database_directory/');
- * define('DB_FILE', 'database_file_name');
- */
-
-/**
- * FQDBDIR is a directory where the sqlite database file is placed.
- * If DB_DIR is defined, it is used as FQDBDIR.
- */
-if ( defined( 'DB_DIR' ) ) {
-	define( 'FQDBDIR', trailingslashit( DB_DIR ) );
-} elseif ( defined( 'WP_CONTENT_DIR' ) ) {
-	define( 'FQDBDIR', WP_CONTENT_DIR . '/database/' );
-} else {
-	define( 'FQDBDIR', ABSPATH . 'wp-content/database/' );
-}
-
-/**
- * FQDB is a database file name. If DB_FILE is defined, it is used
- * as FQDB.
- */
-if ( defined( 'DB_FILE' ) ) {
-	define( 'FQDB', FQDBDIR . DB_FILE );
-} else {
-	define( 'FQDB', FQDBDIR . '.ht.sqlite' );
-}
-
 require_once __DIR__ . '/class-perflab-sqlite-pdo-user-defined-functions.php';
 require_once __DIR__ . '/class-perflab-sqlite-pdo-engine.php';
 require_once __DIR__ . '/class-perflab-sqlite-object-array.php';