diff --git a/src/plugins/coreplugin/dialogs/externaltoolconfig.cpp b/src/plugins/coreplugin/dialogs/externaltoolconfig.cpp
index 9b17d200032..9be71177294 100644
--- a/src/plugins/coreplugin/dialogs/externaltoolconfig.cpp
+++ b/src/plugins/coreplugin/dialogs/externaltoolconfig.cpp
@@ -402,6 +402,7 @@ ExternalToolConfig::ExternalToolConfig(QWidget *parent) :
     m_model(new ExternalToolModel(this))
 {
     ui->setupUi(this);
+    ui->executable->setExpectedKind(Utils::PathChooser::ExistingCommand);
     ui->scrollArea->viewport()->setAutoFillBackground(false);
     ui->scrollAreaWidgetContents->setAutoFillBackground(false);
     ui->toolTree->setModel(m_model);