diff --git a/src/D2TxtParser.php b/src/D2TxtParser.php
index 388bddb..429ddb9 100644
--- a/src/D2TxtParser.php
+++ b/src/D2TxtParser.php
@@ -61,6 +61,7 @@ class D2TxtParser {
 			$allProps[] = $d['code'];
 		}
 		$filteredProps = array_diff($allProps, $propsToFilter);
+		sort($filteredProps);
 		return $filteredProps;
 	}