diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
index d045fd2..387f725 100644
--- a/system/libraries/Upload.php
+++ b/system/libraries/Upload.php
@@ -154,11 +154,26 @@
 
 			switch($error)
 			{
-				case 1  :   $this->set_error('upload_file_exceeds_limit');
+				case 1:	// UPLOAD_ERR_INI_SIZE
+					$this->set_error('upload_file_exceeds_limit');
 					break;
-				case 3  :   $this->set_error('upload_file_partial');
+				case 2: // UPLOAD_ERR_FORM_SIZE
+					$this->set_error('upload_file_exceeds_form_limit');
 					break;
-				case 4  :   $this->set_error('upload_no_file_selected');
+				case 3: // UPLOAD_ERR_PARTIAL
+				   $this->set_error('upload_file_partial');
+					break;
+				case 4: // UPLOAD_ERR_NO_FILE
+				   $this->set_error('upload_no_file_selected');
+					break;
+				case 6: // UPLOAD_ERR_NO_TMP_DIR
+					$this->set_error('upload_no_temp_directory');
+					break;
+				case 7: // UPLOAD_ERR_CANT_WRITE
+					$this->set_error('upload_unable_to_write_file');
+					break;
+				case 8: // UPLOAD_ERR_EXTENSION
+					$this->set_error('upload_stopped_by_extension');
 					break;
 				default :   $this->set_error('upload_no_file_selected');
 					break;