diff --git a/cake/libs/model/datasources/dbo_source.php b/cake/libs/model/datasources/dbo_source.php
index 09c48ae35..28fed873d 100644
--- a/cake/libs/model/datasources/dbo_source.php
+++ b/cake/libs/model/datasources/dbo_source.php
@@ -1573,7 +1573,7 @@ class DboSource extends DataSource {
 					$data = $this->name($key) . " = " . $this->value($value, 'boolean');
 				} elseif ($value === '') {
 					$data = $this->name($key) . " = ''";
-				} elseif (preg_match('/^([a-z]+\\([a-z0-9]*\\)\\x20+|(?:' . join('\\x20)|(?:', $this->__sqlOps) . '\\x20)|<[>=]?(?![^>]+>)\\x20?|[>=!]{1,3}(?!<)\\x20?)?(.*)/i', $value, $match)) {
+				} elseif (preg_match('/^([a-z]+\\([a-z0-9]*\\)\\x20+|(?:' . join('\\x20)|(?:', $this->__sqlOps) . '\\x20)|<[>=]?(?![^>]+>)\\x20?|[>=!]{1,3}(?!<)\\x20?)?(.*)/is', $value, $match)) {
 					if (preg_match('/(\\x20[\\w]*\\x20)/', $key, $regs)) {
 						$clause = $regs['1'];
 						$key = preg_replace('/' . $regs['1'] . '/', '', $key);