diff --git a/src/gui/protocolwidget.cpp b/src/gui/protocolwidget.cpp
index 59e4e51a6..34e91ccff 100644
--- a/src/gui/protocolwidget.cpp
+++ b/src/gui/protocolwidget.cpp
@@ -57,9 +57,15 @@ ProtocolWidget::ProtocolWidget(QWidget *parent) :
     header << tr("Action");
     header << tr("Size");
 
+    int timestampColumnExtra = 0;
+#ifdef Q_OS_WIN
+    timestampColumnExtra = 20; // font metrics are broken on Windows, see #4721
+#endif
+
     _ui->_treeWidget->setHeaderLabels( header );
     int timestampColumnWidth =
-        _ui->_treeWidget->fontMetrics().width(timeString(QDateTime::currentDateTime()));
+        _ui->_treeWidget->fontMetrics().width(timeString(QDateTime::currentDateTime()))
+        + timestampColumnExtra;
     _ui->_treeWidget->setColumnWidth(0, timestampColumnWidth);
     _ui->_treeWidget->setColumnWidth(1, 180);
     _ui->_treeWidget->setColumnCount(5);
@@ -84,7 +90,8 @@ ProtocolWidget::ProtocolWidget(QWidget *parent) :
     _issueItemView->setHeaderLabels( header );
     timestampColumnWidth =
             ActivityItemDelegate::rowHeight() // icon
-            + _issueItemView->fontMetrics().width(timeString(QDateTime::currentDateTime()));
+            + _issueItemView->fontMetrics().width(timeString(QDateTime::currentDateTime()))
+            + timestampColumnExtra;
     _issueItemView->setColumnWidth(0, timestampColumnWidth);
     _issueItemView->setColumnWidth(1, 180);
     _issueItemView->setColumnCount(4);