diff --git a/includes/search/SearchOracle.php b/includes/search/SearchOracle.php
index 4035fc3d54d..7209d6d11c8 100644
--- a/includes/search/SearchOracle.php
+++ b/includes/search/SearchOracle.php
@@ -238,6 +238,7 @@ class SearchOracle extends SearchEngine {
 	 * @param $text String
 	 */
 	function update($id, $title, $text) {
+		global $wgDBprefix;
 		$dbw = wfGetDB(DB_MASTER);
 		$dbw->replace('searchindex',
 			array('si_page'),
@@ -253,9 +254,9 @@ class SearchOracle extends SearchEngine {
 		//     ALTER SESSION SET CURRENT_SCHEMA = ...
 		// was used.
 		$dbw->query( "CALL ctx_ddl.sync_index(" . 
-			$dbw->addQuotes( $dbw->getDBname() . '.si_text_idx' ) . ")" );
+			$dbw->addQuotes( $dbw->getDBname() . '.'.$wgDBprefix.'si_text_idx' ) . ")" );
 		$dbw->query( "CALL ctx_ddl.sync_index(" . 
-			$dbw->addQuotes( $dbw->getDBname() . '.si_title_idx' ) . ")" );
+			$dbw->addQuotes( $dbw->getDBname() . '.'.$wgDBprefix.'si_title_idx' ) . ")" );
 	}
 
 	/**