diff --git a/app/scanner/mainwindow.cpp b/app/scanner/mainwindow.cpp
index 9866b046..1b0527ff 100644
--- a/app/scanner/mainwindow.cpp
+++ b/app/scanner/mainwindow.cpp
@@ -663,9 +663,17 @@ void MainWindow::on_act_moveTo_triggered()
 void MainWindow::on_act_thumbGrid_triggered(bool checked)
 {
     if (checked)
+    {
         m_thumb->setType(HGImgThumb::ThumbType_Grid);
+        resizeDocks({ui->dockWidget}, {300}, Qt::Horizontal);
+    }
+
     else
+    {
         m_thumb->setType(HGImgThumb::ThumbType_Vert);
+        resizeDocks({ui->dockWidget}, {200}, Qt::Horizontal);
+    }
+
 }
 
 void MainWindow::on_dialog_adjust_applyToImage(HGImage img)