diff --git a/mainwindow.cpp b/mainwindow.cpp
index 12a42b8..c899d2e 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -6,6 +6,7 @@
 #include <QCloseEvent>
 #include <QCoreApplication>
 #include <QDoubleSpinBox>
+#include <QInputDialog>
 #include <QListWidgetItem>
 #include <QMenu>
 #include <QStatusBar>