diff --git a/src/ReplaceTextSearch.php b/src/ReplaceTextSearch.php
index c59bdd54..ac18e54e 100644
--- a/src/ReplaceTextSearch.php
+++ b/src/ReplaceTextSearch.php
@@ -1,7 +1,6 @@
 <?php
 
 use Wikimedia\Rdbms\Database;
-use Wikimedia\Rdbms\DatabasePostgres;
 use Wikimedia\Rdbms\IResultWrapper;
 
 class ReplaceTextSearch {
@@ -79,7 +78,7 @@ class ReplaceTextSearch {
 	 * @return string query condition for regex
 	 */
 	public static function regexCond( $dbr, $column, $regex ) {
-		if ( $dbr instanceof DatabasePostgres ) {
+		if ( $dbr->getType() == 'postgres' ) {
 			$op = '~';
 		} else {
 			$op = 'REGEXP';
diff --git a/src/SpecialReplaceText.php b/src/SpecialReplaceText.php
index b502f7df..273872d0 100644
--- a/src/SpecialReplaceText.php
+++ b/src/SpecialReplaceText.php
@@ -427,7 +427,7 @@ class SpecialReplaceText extends SpecialPage {
 		// SQLite unfortunately lacks a REGEXP function or operator by
 		// default, so disable regex(p) searches for SQLite.
 		$dbr = wfGetDB( DB_REPLICA );
-		if ( ! $dbr instanceof Wikimedia\Rdbms\DatabaseSqlite ) {
+		if ( $dbr->getType() != 'sqlite' ) {
 			$out->addHTML( Xml::tags( 'p', null,
 					Xml::checkLabel(
 						$this->msg( 'replacetext_useregex' )->text(),