diff --git a/system/database/drivers/mssql/mssql_result.php b/system/database/drivers/mssql/mssql_result.php
index 8828dc9..c1c42a4 100644
--- a/system/database/drivers/mssql/mssql_result.php
+++ b/system/database/drivers/mssql/mssql_result.php
@@ -107,7 +107,7 @@
 	public function field_data()
 	{
 		$retval = array();
-		for ($i = 0, $c = $this->num_field(); $i < $c; $i++)
+		for ($i = 0, $c = $this->num_fields(); $i < $c; $i++)
 		{
 			$field = mssql_fetch_field($this->result_id, $i);