diff --git a/src/db/unit_tests/dbLayoutToNetlistReaderTests.cc b/src/db/unit_tests/dbLayoutToNetlistReaderTests.cc
index 0d56d2dae..1fd37692f 100644
--- a/src/db/unit_tests/dbLayoutToNetlistReaderTests.cc
+++ b/src/db/unit_tests/dbLayoutToNetlistReaderTests.cc
@@ -497,3 +497,45 @@ TEST(5_ReaderFuture)
   compare_text_files (path, au_path);
 }
 
+TEST(6_ReaderLog)
+{
+  db::LayoutToNetlist l2n;
+
+  std::string in_path = tl::combine_path (tl::combine_path (tl::testdata (), "algo"), "l2n_reader_6.l2n");
+  tl::InputStream is_in (in_path);
+
+  db::LayoutToNetlistStandardReader reader (is_in);
+  reader.read (&l2n);
+
+  //  verify against the input
+
+  std::string path = tmp_file ("tmp.txt");
+  {
+    tl::OutputStream stream (path);
+    db::LayoutToNetlistStandardWriter writer (stream, false);
+    writer.write (&l2n);
+  }
+
+  std::string au_path = tl::combine_path (tl::combine_path (tl::testdata (), "algo"), "l2n_reader_au_6.l2n");
+
+  compare_text_files (path, au_path);
+
+  std::string in_path_s = tl::combine_path (tl::combine_path (tl::testdata (), "algo"), "l2n_reader_6s.l2n");
+  tl::InputStream is_in_s (in_path_s);
+
+  l2n.clear_log_entries ();
+  db::LayoutToNetlistStandardReader reader_s (is_in_s);
+  reader_s.read (&l2n);
+
+  //  verify against the input
+
+  path = tmp_file ("tmp2.txt");
+  {
+    tl::OutputStream stream (path);
+    db::LayoutToNetlistStandardWriter writer (stream, false);
+    writer.write (&l2n);
+  }
+
+  compare_text_files (path, au_path);
+}
+
diff --git a/src/db/unit_tests/dbLayoutToNetlistWriterTests.cc b/src/db/unit_tests/dbLayoutToNetlistWriterTests.cc
index 68cac78b0..9acaab77d 100644
--- a/src/db/unit_tests/dbLayoutToNetlistWriterTests.cc
+++ b/src/db/unit_tests/dbLayoutToNetlistWriterTests.cc
@@ -449,3 +449,38 @@ TEST(2_WriterWithGlobalNets)
     db::compare_layouts (_this, ly2, au);
   }
 }
+
+TEST(3_Messages)
+{
+  db::Layout ly;
+  db::Cell &tc = ly.cell (ly.add_cell ("TOP"));
+  db::LayoutToNetlist l2n (db::RecursiveShapeIterator (ly, tc, std::set<unsigned int> ()));
+
+  l2n.extract_netlist ();
+
+  l2n.log_entry (db::LogEntryData (db::Info, "info"));
+  l2n.log_entry (db::LogEntryData (db::Warning, "warning"));
+  l2n.log_entry (db::LogEntryData (db::Error, "error"));
+
+  std::string path = tmp_file ("tmp_l2nwriter_3.txt");
+  {
+    tl::OutputStream stream (path);
+    db::LayoutToNetlistStandardWriter writer (stream, false);
+    writer.write (&l2n);
+  }
+
+  std::string au_path = tl::combine_path (tl::combine_path (tl::testdata (), "algo"), "l2n_writer_au_3.txt");
+
+  compare_text_files (path, au_path);
+
+  path = tmp_file ("tmp_l2nwriter_3s.txt");
+  {
+    tl::OutputStream stream (path);
+    db::LayoutToNetlistStandardWriter writer (stream, true);
+    writer.write (&l2n);
+  }
+
+  au_path = tl::combine_path (tl::combine_path (tl::testdata (), "algo"), "l2n_writer_au_3s.txt");
+
+  compare_text_files (path, au_path);
+}
diff --git a/testdata/algo/l2n_reader_6.l2n b/testdata/algo/l2n_reader_6.l2n
index 4a4b7939c..2b0c7fd7c 100644
--- a/testdata/algo/l2n_reader_6.l2n
+++ b/testdata/algo/l2n_reader_6.l2n
@@ -1,6 +1,18 @@
 #%l2n-klayout
-W(TOP)
-U(0.001)
-H(I B(info))
-H(W B(warning))
-H(E B(error))
+top(TOP)
+unit(0.001)
+
+# Layer section
+# This section lists the mask layers (drawing or derived) and their connections.
+
+# Mask layers
+
+# Mask layer connectivity
+
+# Log entries
+message(info description(info))
+message(warning description(warning))
+message(error description(error))
+
+# Circuit section
+# Circuits are the hierarchical building blocks of the netlist.
diff --git a/testdata/algo/l2n_reader_6s.l2n b/testdata/algo/l2n_reader_6s.l2n
new file mode 100644
index 000000000..4a4b7939c
--- /dev/null
+++ b/testdata/algo/l2n_reader_6s.l2n
@@ -0,0 +1,6 @@
+#%l2n-klayout
+W(TOP)
+U(0.001)
+H(I B(info))
+H(W B(warning))
+H(E B(error))