diff --git a/src/Dibi/Drivers/PostgreDriver.php b/src/Dibi/Drivers/PostgreDriver.php
index b98a0d40..fb36cf39 100644
--- a/src/Dibi/Drivers/PostgreDriver.php
+++ b/src/Dibi/Drivers/PostgreDriver.php
@@ -199,7 +199,7 @@ class PostgreDriver implements Dibi\Driver, Dibi\ResultDriver, Dibi\Reflector
 		}
 
 		$row = $res->fetch(false);
-		return is_array($row) ? $row[0] : null;
+		return is_array($row) ? (int) $row[0] : null;
 	}