diff --git a/jxmpp-strings-testframework/src/main/resources/xmpp-strings/jids/invalid/main b/jxmpp-strings-testframework/src/main/resources/xmpp-strings/jids/invalid/main
index dee120b..e0a2927 100644
--- a/jxmpp-strings-testframework/src/main/resources/xmpp-strings/jids/invalid/main
+++ b/jxmpp-strings-testframework/src/main/resources/xmpp-strings/jids/invalid/main
@@ -16,6 +16,10 @@ EveryNonRsChar → !'RS'
 
 For more information see 'jids/valid/main'.
 
+invalid jid:
+jul
iet@example.com
+SOH character (U+0001) in localpart
+
 RFC 7622 Table 2
 ================
 Simplified BSD License
diff --git a/jxmpp-strings-testframework/src/test/java/org/jxmpp/strings/testframework/StringsTestframeworkTest.java b/jxmpp-strings-testframework/src/test/java/org/jxmpp/strings/testframework/StringsTestframeworkTest.java
index ce9dfef..97fce32 100644
--- a/jxmpp-strings-testframework/src/test/java/org/jxmpp/strings/testframework/StringsTestframeworkTest.java
+++ b/jxmpp-strings-testframework/src/test/java/org/jxmpp/strings/testframework/StringsTestframeworkTest.java
@@ -1,6 +1,6 @@
 /**
  *
- * Copyright 2019-2020 Florian Schmaus
+ * Copyright 2019-2024 Florian Schmaus
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,7 +26,7 @@
 public class StringsTestframeworkTest {
 
 	private static final int VALID_JID_CORPUS_SIZE = 22;
-	private static final int INVALID_JID_CORPUS_SIZE = 22;
+	private static final int INVALID_JID_CORPUS_SIZE = 23;
 
 	@Test
 	public void testStringsTestframeworkIsSuccessful() {