diff --git a/app/scantool/dialog_add.cpp b/app/scantool/dialog_add.cpp
index 54d87567..7e0f3a14 100644
--- a/app/scantool/dialog_add.cpp
+++ b/app/scantool/dialog_add.cpp
@@ -13,6 +13,10 @@ Dialog_Add::Dialog_Add(SANE_Handle devHandle, class MainWindow *mainWnd, const s
     setWindowFlags(Qt::Dialog | Qt::WindowCloseButtonHint);
     this->setWindowTitle(tr("Add") + " (" + QString(deviceType.c_str()) + ")");
 
+#if defined (x86_64)
+    ui->comboBoxButtonId->setMinimumWidth(90);
+#endif
+
     ui->comboBoxButtonId->addItem(tr("Manual"));
     SANE_Int buttonCount = 0;
     sane_control_option(devHandle, (SANE_Int)0x886E, SANE_ACTION_GET_VALUE, &buttonCount, NULL);
@@ -46,6 +50,10 @@ Dialog_Add::Dialog_Add(SANE_Handle devHandle, class MainWindow *mainWnd, const S
     setWindowFlags(Qt::Dialog | Qt::WindowCloseButtonHint);
     this->setWindowTitle(tr("Modify") + " (" + QString(scanParam.deviceType.c_str()) + ")");
 
+#if defined (x86_64)
+    ui->comboBoxButtonId->setMinimumWidth(90);
+#endif
+
     ui->comboBoxButtonId->addItem(tr("Manual"));
     SANE_Int buttonCount = 0;
     sane_control_option(devHandle, (SANE_Int)0x886E, SANE_ACTION_GET_VALUE, &buttonCount, NULL);