diff --git a/system/database/DB_driver.php b/system/database/DB_driver.php
index a04a65e..12cd391 100644
--- a/system/database/DB_driver.php
+++ b/system/database/DB_driver.php
@@ -165,7 +165,7 @@
 		}
 
 		// Now we set the character set and that's all
-		return $this->db_set_charset($this->char_set, $this->dbcollat);
+		return $this->db_set_charset($this->char_set);
 	}
 
 	// --------------------------------------------------------------------
@@ -177,9 +177,9 @@
 	 * @param	string
 	 * @return	bool
 	 */
-	public function db_set_charset($charset, $collation = '')
+	public function db_set_charset($charset)
 	{
-		if (method_exists($this, '_db_set_charset') && ! $this->_db_set_charset($charset, $collation))
+		if (method_exists($this, '_db_set_charset') && ! $this->_db_set_charset($charset))
 		{
 			log_message('error', 'Unable to set database connection charset: '.$charset);
 
diff --git a/system/database/drivers/mysql/mysql_driver.php b/system/database/drivers/mysql/mysql_driver.php
index 071ce43..ba646d2 100644
--- a/system/database/drivers/mysql/mysql_driver.php
+++ b/system/database/drivers/mysql/mysql_driver.php
@@ -144,10 +144,9 @@
 	 * Set client character set
 	 *
 	 * @param	string
-	 * @param	string
 	 * @return	bool
 	 */
-	protected function _db_set_charset($charset, $collation)
+	protected function _db_set_charset($charset)
 	{
 		return @mysql_set_charset($charset, $this->conn_id);
 	}
diff --git a/system/database/drivers/mysqli/mysqli_driver.php b/system/database/drivers/mysqli/mysqli_driver.php
index e84b834..f38b94c 100644
--- a/system/database/drivers/mysqli/mysqli_driver.php
+++ b/system/database/drivers/mysqli/mysqli_driver.php
@@ -144,10 +144,9 @@
 	 * Set client character set
 	 *
 	 * @param	string
-	 * @param	string
 	 * @return	bool
 	 */
-	protected function _db_set_charset($charset, $collation)
+	protected function _db_set_charset($charset)
 	{
 		return @mysqli_set_charset($this->conn_id, $charset);
 	}