diff -r 30b840ed8c0e -r 822b7e3d064d src/main/java/de/uapcore/lightpit/dao/postgres/PGIssueDao.java
--- a/src/main/java/de/uapcore/lightpit/dao/postgres/PGIssueDao.java	Fri Oct 23 18:40:50 2020 +0200
+++ b/src/main/java/de/uapcore/lightpit/dao/postgres/PGIssueDao.java	Fri Oct 23 20:34:57 2020 +0200
@@ -275,7 +275,7 @@
         List<IssueComment> comments = new ArrayList<>();
         try (var result = listComments.executeQuery()) {
             while (result.next()) {
-                final var comment = new IssueComment(result.getInt("commentid"), issue);
+                final var comment = new IssueComment(result.getInt("commentid"));
                 comment.setCreated(result.getTimestamp("created"));
                 comment.setUpdated(result.getTimestamp("updated"));
                 comment.setUpdateCount(result.getInt("updatecount"));
@@ -288,15 +288,13 @@
     }
 
     @Override
-    public void saveComment(IssueComment comment) throws SQLException {
-        Objects.requireNonNull(comment.getComment());
-        Objects.requireNonNull(comment.getIssue());
+    public void saveComment(Issue issue, IssueComment comment) throws SQLException {
         if (comment.getId() >= 0) {
             updateComment.setString(1, comment.getComment());
             updateComment.setInt(2, comment.getId());
             updateComment.execute();
         } else {
-            insertComment.setInt(1, comment.getIssue().getId());
+            insertComment.setInt(1, issue.getId());
             insertComment.setString(2, comment.getComment());
             setForeignKeyOrNull(insertComment, 3, comment.getAuthor(), User::getId);
             insertComment.execute();