diff --git a/app/scanner/setpicclrtool.cpp b/app/scanner/setpicclrtool.cpp
index 78597d89..3ebedd56 100644
--- a/app/scanner/setpicclrtool.cpp
+++ b/app/scanner/setpicclrtool.cpp
@@ -9,6 +9,7 @@ setPicClrTool::setPicClrTool(QWidget *parent) :
     ui(new Ui::setPicClrTool)
 {
     ui->setupUi(this);
+    setWindowFlags(Qt::Dialog | Qt::WindowCloseButtonHint);
     setMouseTracking(true);
     ui->inputEdt->setEnabled(false);
     ui->outputEdt->setEnabled(false);