diff --git a/tools/chatgui/transport/node_config.cpp b/tools/chatgui/transport/node_config.cpp
index 098ddb61..20739a2b 100644
--- a/tools/chatgui/transport/node_config.cpp
+++ b/tools/chatgui/transport/node_config.cpp
@@ -38,7 +38,7 @@ static const QSet<QString> CONTROL_KEYS = {
 };
 
 static const QSet<QString> GUI_KEYS = {
-    "db_path", "debug_file", "debug_level", "debug_categories",
+    "db_path", "debug_file", "debug_level",
     "sound_dir", "sound_msg_incoming", "sound_msg_outgoing",
     "sound_connect", "sound_disconnect"
 };
@@ -80,6 +80,35 @@ static const QStringList VALID_DEBUG_LEVELS = {
     "none", "error", "warn", "info", "debug", "trace"
 };
 
+// Основные debug-категории для подсказки в секции [debug] (комментарием).
+// Имена соответствуют lib/debug_config.c (g_debug_categories), уровень — разумный дефолт.
+static const struct { const char* name; const char* level; } DEBUG_CATEGORY_HINTS[] = {
+    {"sys",         "error"},
+    {"connection",  "info"},
+    {"etcp",        "trace"},
+    {"crypto",      "error"},
+    {"config",      "info"},
+    {"tun",         "error"},
+    {"routing",     "info"},
+    {"timers",      "error"},
+    {"bgp",         "info"},
+    {"chat",        "info"},
+    {"chat_sync",   "info"},
+    {"member_sync", "info"},
+    {"socket",      "error"},
+    {"control",     "info"},
+    {"dump",        "trace"},
+    {"traffic",     "trace"},
+    {"debug",       "trace"},
+    {"general",     "info"},
+    {"nat",         "info"},
+    {"keepalive",   "error"},
+    {"media",       "info"},
+    {"etcp_route",  "info"},
+    {"etcp_dump",   "trace"},
+    {"proxy",       "info"},
+};
+
 // Sections: "" = global, use prefix match for dynamic sections
 static bool isSectionValid(const QString& section) {
     if (section.isEmpty() || section == "global") return true;
@@ -305,7 +334,6 @@ bool NodeConfig::load() {
             if (key == "db_path") m_dbPath = val;
             else if (key == "debug_file") m_debugFile = val;
             else if (key == "debug_level") m_debugLevel = val;
-            else if (key == "debug_categories") m_debugCategories = val;
         } else if (debugSection) {
             if (!m_debugCategories.isEmpty()) m_debugCategories += ',';
             m_debugCategories += key + '=' + val;
@@ -357,18 +385,16 @@ bool NodeConfig::saveFull() {
     out << "[gui]\n";
     out << "db_path=" << (m_dbPath.isEmpty() ? "chat_data" : m_dbPath) << "\n";
     out << "debug_file=" << m_debugFile << "\n";
-    out << "debug_level=" << (m_debugLevel.isEmpty() ? "info" : m_debugLevel) << "\n";
-    out << "debug_categories=" << m_debugCategories << "\n\n";
-
-    if (!m_debugCategories.isEmpty()) {
-        out << "[debug]\n";
-        QStringList dbg = m_debugCategories.split(',', Qt::SkipEmptyParts);
-        for (const QString& d : dbg) {
-            int eq = d.indexOf('=');
-            if (eq > 0) out << d.left(eq).trimmed() << '=' << d.mid(eq + 1).trimmed() << '\n';
-        }
-        out << '\n';
+    out << "debug_level=" << (m_debugLevel.isEmpty() ? "info" : m_debugLevel) << "\n\n";
+
+    out << "[debug]\n";
+    for (const auto& h : DEBUG_CATEGORY_HINTS)
+        out << '#' << h.name << '=' << h.level << '\n';
+    for (const QString& d : m_debugCategories.split(',', Qt::SkipEmptyParts)) {
+        int eq = d.indexOf('=');
+        if (eq > 0) out << d.left(eq).trimmed() << '=' << d.mid(eq + 1).trimmed() << '\n';
     }
+    out << '\n';
 
     out << "[allowed_keys]\n";
     out << "allow_all=yes\n\n";
@@ -420,7 +446,6 @@ bool NodeConfig::save() {
     config_update_in_lines(lines, "gui", "db_path", m_dbPath.isEmpty() ? "chat_data" : m_dbPath, true);
     config_update_in_lines(lines, "gui", "debug_file", m_debugFile, true);
     config_update_in_lines(lines, "gui", "debug_level", m_debugLevel.isEmpty() ? "info" : m_debugLevel, true);
-    config_update_in_lines(lines, "gui", "debug_categories", m_debugCategories, true);
 
     /* [debug] section: each category=level as separate line */
     QStringList dbg = m_debugCategories.split(',', Qt::SkipEmptyParts);