diff --git a/pg4wp/driver_pgsql.php b/pg4wp/driver_pgsql.php
index ca966ea..7b46d76 100644
--- a/pg4wp/driver_pgsql.php
+++ b/pg4wp/driver_pgsql.php
@@ -323,7 +323,7 @@
 			// MySQL supports strings as names, PostgreSQL needs identifiers.
 			// Limit to after closing parenthesis to reduce false-positives
 			// Currently only an issue for nextgen-gallery plugin
-			$pattern = '/\) AS \'([^\'])\'/';
+			$pattern = '/\) AS \'([^\']+)\'/';
 			$sql = preg_replace( $pattern, ') AS "$1"', $sql);
 		} // SELECT
 		elseif( 0 === strpos($sql, 'UPDATE'))