diff --git a/pg4wp/driver_pgsql.php b/pg4wp/driver_pgsql.php
index 551272d..fb29f4e 100644
--- a/pg4wp/driver_pgsql.php
+++ b/pg4wp/driver_pgsql.php
@@ -164,6 +164,8 @@
 			$sql = preg_replace($pattern, 'LIMIT $2 OFFSET $1', $sql);
 			
 			$sql = str_replace('INTERVAL 120 MINUTE', "'120 minutes'::interval", $sql);
+			// The following handles a new "INTERVAL" call in Akismet 2.2.7
+			$sql = str_replace('INTERVAL 15 DAY', "'15 days'::interval", $sql);
 			
 			$pattern = '/DATE_ADD[ ]*\(([^,]+),([^\)]+)\)/';
 			$sql = preg_replace( $pattern, '($1 + $2)', $sql);
diff --git a/readme.txt b/readme.txt
index 1a84130..c0b8335 100644
--- a/readme.txt
+++ b/readme.txt
@@ -50,6 +50,8 @@ There is no screenshot for this plugin
 
 == Changelog ==
 
+* Added support for "INTERVAL 15 DAY" found in Akismet 2.2.7
+
 = 1.0.2 =
 * Updated support for plugin zdMultilang 1.2.5
 * Got rid of some remaining hardcoded table prefix