diff --git a/pg4wp/driver_pgsql.php b/pg4wp/driver_pgsql.php
index 4a5702d..46ba043 100644
--- a/pg4wp/driver_pgsql.php
+++ b/pg4wp/driver_pgsql.php
@@ -233,6 +233,9 @@
 			
 			// Handle CAST( ... AS CHAR)
 			$sql = preg_replace( '/CAST\((.+) AS CHAR\)/', 'CAST($1 AS TEXT)', $sql);
+
+			// Handle CAST( ... AS SIGNED)
+			$sql = preg_replace( '/CAST\((.+) AS SIGNED\)/', 'CAST($1 AS INTEGER)', $sql);
 			
 			// Handle COUNT(*)...ORDER BY...
 			$sql = preg_replace( '/COUNT(.+)ORDER BY.+/s', 'COUNT$1', $sql);