diff --git a/system/helpers/date_helper.php b/system/helpers/date_helper.php
index a5c46e4..d5036f6 100644
--- a/system/helpers/date_helper.php
+++ b/system/helpers/date_helper.php
@@ -314,13 +314,13 @@
 			$time = time();
 		}
 
-		return mktime(
-			gmdate('H', $time),
-			gmdate('i', $time),
-			gmdate('s', $time),
-			gmdate('m', $time),
-			gmdate('d', $time),
-			gmdate('Y', $time)
+		return gmmktime(
+			date('H', $time),
+			date('i', $time),
+			date('s', $time),
+			date('m', $time),
+			date('d', $time),
+			date('Y', $time)
 		);
 	}
 }
@@ -375,9 +375,7 @@
 		// since the formatting changed with MySQL 4.1
 		// YYYY-MM-DD HH:MM:SS
 
-		$time = str_replace('-', '', $time);
-		$time = str_replace(':', '', $time);
-		$time = str_replace(' ', '', $time);
+		$time = str_replace(array('-', ':', ' '), '', $time);
 
 		// YYYYMMDDHHMMSS
 		return mktime(