diff --git a/tools/chatgui/src/accountdelegate.cpp b/tools/chatgui/src/accountdelegate.cpp
index 7d5535c7..db7440d1 100644
--- a/tools/chatgui/src/accountdelegate.cpp
+++ b/tools/chatgui/src/accountdelegate.cpp
@@ -1,6 +1,7 @@
 #include "accountdelegate.h"
 #include "flagpainter.h"
 #include "memberlistmodel.h"
+#include "debug_ui.h"
 #include <QPainter>
 #include <QFont>
 #include <QMouseEvent>
@@ -9,8 +10,16 @@ static QRect inviteButtonRect(const QRect& row) {
     return QRect(row.right() - 31, row.center().y() - 14, 28, 28);
 }
 
+static QRect avatarRect(const QRect& row) {
+    const int size = MemberListModel::kAvatarSize;
+    return QRect(row.left() + 4, row.top() + (row.height() - size) / 2, size, size);
+}
+
 AccountDelegate::AccountDelegate(QObject *parent)
-    : QStyledItemDelegate(parent) {}
+    : QStyledItemDelegate(parent) {
+    GUI_DEBUG("AccountDelegate: row height=%dpx avatar=%dpx gap=%dpx", MemberListModel::kRowHeight,
+        MemberListModel::kAvatarSize, MemberListModel::kRowHeight - MemberListModel::kAvatarSize);
+}
 
 void AccountDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
                              const QModelIndex &index) const {
@@ -24,11 +33,11 @@ void AccountDelegate::paint(QPainter *painter, const QStyleOptionViewItem &optio
         painter->fillRect(option.rect, option.palette.alternateBase());
 
     const int margin = 4;
-    const int iconSz = 24;
+    const int iconSz = MemberListModel::kAvatarSize;
 
     QIcon icon = qvariant_cast<QIcon>(index.data(Qt::DecorationRole));
     if (!icon.isNull())
-        icon.paint(painter, option.rect.left() + margin, option.rect.top() + (option.rect.height() - iconSz) / 2, iconSz, iconSz);
+        icon.paint(painter, avatarRect(option.rect));
 
     const int x = option.rect.left() + iconSz + margin * 3;
     const bool canInvite = !index.data(Qt::UserRole + 2).toBool();
@@ -96,7 +105,7 @@ bool AccountDelegate::editorEvent(QEvent* event, QAbstractItemModel* model, cons
         event->type() != QEvent::MouseButtonDblClick) return false;
     auto* mouse = static_cast<QMouseEvent*>(event);
     if (mouse->button() != Qt::LeftButton) return false;
-    const bool onAvatar=QRect(option.rect.left()+4,option.rect.center().y()-12,24,24).contains(mouse->pos());
+    const bool onAvatar = avatarRect(option.rect).contains(mouse->pos());
     if (event->type()==QEvent::MouseButtonPress) {
         m_avatarPress=onAvatar ? index : QModelIndex(); m_avatarPosition=mouse->pos();
     }
@@ -119,5 +128,5 @@ bool AccountDelegate::editorEvent(QEvent* event, QAbstractItemModel* model, cons
 QSize AccountDelegate::sizeHint(const QStyleOptionViewItem &option,
                                  const QModelIndex &index) const {
     (void)option; (void)index;
-    return QSize(160, 36);
+    return QSize(160, MemberListModel::kRowHeight);
 }
diff --git a/tools/chatgui/src/accountlist.cpp b/tools/chatgui/src/accountlist.cpp
index 7f8e0c1e..34131914 100644
--- a/tools/chatgui/src/accountlist.cpp
+++ b/tools/chatgui/src/accountlist.cpp
@@ -96,7 +96,7 @@ AccountList::AccountList(DbManager* db, QWidget *parent)
     m_listView->setEditTriggers(QAbstractItemView::NoEditTriggers);
     m_listView->setSelectionMode(QAbstractItemView::SingleSelection);
     m_listView->setMouseTracking(true);
-    m_listView->setIconSize(QSize(24, 24));
+    m_listView->setIconSize(QSize(MemberListModel::kAvatarSize, MemberListModel::kAvatarSize));
     m_listView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
     m_listView->setVerticalScrollMode(QAbstractItemView::ScrollPerPixel);
     m_listView->setContextMenuPolicy(Qt::CustomContextMenu);
diff --git a/tools/chatgui/src/memberlistmodel.cpp b/tools/chatgui/src/memberlistmodel.cpp
index 93a2f156..2e4967e2 100644
--- a/tools/chatgui/src/memberlistmodel.cpp
+++ b/tools/chatgui/src/memberlistmodel.cpp
@@ -17,12 +17,14 @@ extern "C" {
 static void applyPhoto(MemberListItem& item, const QString& channel) {
     auto* manager = AvatarManager::instance(); if (!manager) return;
     const QImage image = manager->image(channel, item.nodeId); if (image.isNull()) return;
-    QPixmap pixmap(24, 24); pixmap.fill(Qt::transparent);
+    const int size = MemberListModel::kAvatarSize;
+    QPixmap pixmap(size, size); pixmap.fill(Qt::transparent);
     QPainter painter(&pixmap); painter.setRenderHint(QPainter::Antialiasing);
-    QPainterPath clip; clip.addEllipse(QRectF(0, 0, 24, 24)); painter.setClipPath(clip);
-    painter.drawImage(QRect(0, 0, 24, 24), image); painter.setClipping(false);
+    painter.setRenderHint(QPainter::SmoothPixmapTransform);
+    QPainterPath clip; clip.addEllipse(QRectF(0, 0, size, size)); painter.setClipPath(clip);
+    painter.drawImage(QRect(0, 0, size, size), image); painter.setClipping(false);
     painter.setPen(QPen(Qt::white, 1)); painter.setBrush(item.online ? QColor("#4CAF50") : QColor("#9E9E9E"));
-    painter.drawEllipse(QRect(17, 17, 6, 6)); painter.end(); item.avatar = pixmap;
+    painter.drawEllipse(QRect(size - 7, size - 7, 6, 6)); painter.end(); item.avatar = pixmap;
 }
 
 MemberListModel::MemberListModel(QObject* parent)
@@ -136,16 +138,17 @@ static void deserialize_member(const uint8_t* src, MemberListItem& item) {
     item.name = QString::fromUtf8(name);
 
     QColor c = item.online ? QColor("#4CAF50") : QColor("#9E9E9E");
-    QPixmap pm(24, 24); pm.fill(Qt::transparent);
+    const int size = MemberListModel::kAvatarSize;
+    QPixmap pm(size, size); pm.fill(Qt::transparent);
     QPainter p(&pm);
     p.setRenderHint(QPainter::Antialiasing);
     p.setBrush(c);
     p.setPen(Qt::NoPen);
-    p.drawEllipse(2, 2, 20, 20);
+    p.drawEllipse(0, 0, size, size);
     p.setPen(Qt::white);
-    QFont f; f.setBold(true); f.setPixelSize(12);
+    QFont f; f.setBold(true); f.setPixelSize(size / 2);
     p.setFont(f);
-    p.drawText(QRect(0, 0, 24, 24), Qt::AlignCenter, item.name.left(1));
+    p.drawText(QRect(0, 0, size, size), Qt::AlignCenter, item.name.left(1));
     p.end();
     item.avatar = pm;
 }
diff --git a/tools/chatgui/src/memberlistmodel.h b/tools/chatgui/src/memberlistmodel.h
index b0901df8..5aad3b03 100644
--- a/tools/chatgui/src/memberlistmodel.h
+++ b/tools/chatgui/src/memberlistmodel.h
@@ -27,6 +27,10 @@ struct MemberListItem {
 class MemberListModel : public QAbstractListModel {
     Q_OBJECT
 public:
+    /* Высота строки 36 px, между аватарками остаётся 2 px. */
+    static constexpr int kRowHeight = 36;
+    static constexpr int kAvatarSize = kRowHeight - 2;
+
     explicit MemberListModel(QObject* parent = nullptr);
 
     int  rowCount(const QModelIndex& parent = QModelIndex()) const override;
diff --git a/tools/chatgui/src/messagedelegate.cpp b/tools/chatgui/src/messagedelegate.cpp
index e0c48e13..a8c6a796 100644
--- a/tools/chatgui/src/messagedelegate.cpp
+++ b/tools/chatgui/src/messagedelegate.cpp
@@ -83,7 +83,9 @@ QString MessageDelegate::linkAt(const QStyleOptionViewItem& option, const QModel
 }
 
 MessageDelegate::MessageDelegate(QObject *parent)
-    : QStyledItemDelegate(parent) {}
+    : QStyledItemDelegate(parent) {
+    GUI_DEBUG("MessageDelegate: avatar size=%dpx", kAvatar);
+}
 
 struct VoicePlayState {
     uint64_t playbackId = 0;
@@ -442,7 +444,7 @@ MessageDelegate::Layout MessageDelegate::calcLayout(
         }
 
         if (!L.narrow) {
-            int avatarY = L.bubbleRect.bottom() - kAvatar;
+            int avatarY = qMax(0, L.bubbleRect.bottom() + 1 - kAvatar);
             if (!L.isOutgoing)
                 L.avatarRect = QRect(kMarginH, avatarY, kAvatar, kAvatar);
             else
@@ -484,7 +486,7 @@ MessageDelegate::Layout MessageDelegate::calcLayout(
         L.videoDurBadgeRect = QRect(bx + thW - 66, thH - 26, 58, 18);
 
         if (!L.narrow) {
-            int avatarY = L.bubbleRect.bottom() - kAvatar;
+            int avatarY = qMax(0, L.bubbleRect.bottom() + 1 - kAvatar);
             if (!L.isOutgoing)
                 L.avatarRect = QRect(kMarginH, avatarY, kAvatar, kAvatar);
             else
@@ -519,7 +521,7 @@ MessageDelegate::Layout MessageDelegate::calcLayout(
         L.imageBadgeRect = QRect(bx + thW - 150, thH - 26, 142, 18);
 
         if (!L.narrow) {
-            int avatarY = L.bubbleRect.bottom() - kAvatar;
+            int avatarY = qMax(0, L.bubbleRect.bottom() + 1 - kAvatar);
             if (!L.isOutgoing)
                 L.avatarRect = QRect(kMarginH, avatarY, kAvatar, kAvatar);
             else
@@ -557,7 +559,7 @@ MessageDelegate::Layout MessageDelegate::calcLayout(
         L.statusRect = QRect(bx + kPadH + ih + 8 - 48, kPadTop + th + 2, L.bubbleWidth - 2*kPadH - ih - 8 + 48 - 40, th);
 
         if (!L.narrow) {
-            int avatarY = L.bubbleRect.bottom() - kAvatar;
+            int avatarY = qMax(0, L.bubbleRect.bottom() + 1 - kAvatar);
             if (!L.isOutgoing)
                 L.avatarRect = QRect(kMarginH, avatarY, kAvatar, kAvatar);
             else
@@ -687,7 +689,7 @@ MessageDelegate::Layout MessageDelegate::calcLayout(
     L.statusRect = QRect(txRect, contentTop + textH + 2, textW, kStatusH);
 
     if (!L.narrow) {
-        int avatarY = L.bubbleRect.bottom() - kAvatar;
+        int avatarY = qMax(0, L.bubbleRect.bottom() + 1 - kAvatar);
         if (!L.isOutgoing)
             L.avatarRect = QRect(kMarginH, avatarY, kAvatar, kAvatar);
         else
@@ -1617,6 +1619,7 @@ void MessageDelegate::drawAvatar(QPainter *p, const Layout &L,
     p->setRenderHint(QPainter::Antialiasing);
     QPainterPath clip;
     clip.addEllipse(L.avatarRect);
+    p->setRenderHint(QPainter::SmoothPixmapTransform);
     p->setClipPath(clip);
     p->drawPixmap(L.avatarRect, av);
     p->restore();
diff --git a/tools/chatgui/src/messagedelegate.h b/tools/chatgui/src/messagedelegate.h
index c1d7dc86..cab3d54f 100644
--- a/tools/chatgui/src/messagedelegate.h
+++ b/tools/chatgui/src/messagedelegate.h
@@ -52,6 +52,8 @@ enum MessageDataRole {
 class MessageDelegate : public QStyledItemDelegate {
     Q_OBJECT
 public:
+    static constexpr int kAvatar = 54;
+
     explicit MessageDelegate(QObject *parent = nullptr);
 
     void paint(QPainter *painter, const QStyleOptionViewItem &option,
@@ -128,7 +130,6 @@ private:
     void drawAvatar(QPainter *p, const Layout &L,
                     const QModelIndex &index) const;
 
-    static constexpr int kAvatar   = 36;
     static constexpr int kGap      = 8;
     static constexpr int kRadius   = 10;
     static constexpr int kPadH     = 12;
diff --git a/tools/chatgui/src/messagelist.cpp b/tools/chatgui/src/messagelist.cpp
index d6dcc9ac..743b0164 100644
--- a/tools/chatgui/src/messagelist.cpp
+++ b/tools/chatgui/src/messagelist.cpp
@@ -77,7 +77,7 @@ static QIcon makeRadioIcon(const QColor& color) {
     return icon;
 }
 
-static QPixmap makeAvatar(const QColor &color, const QString &letter, int size = 36) {
+static QPixmap makeAvatar(const QColor &color, const QString &letter, int size = MessageDelegate::kAvatar) {
     QPixmap pix(size, size);
     pix.fill(Qt::transparent);
     QPainter p(&pix);