diff --git a/src/main/tooraclesetting.cpp b/src/main/tooraclesetting.cpp
index 0e20cda..7735842 100644
--- a/src/main/tooraclesetting.cpp
+++ b/src/main/tooraclesetting.cpp
@@ -45,6 +45,8 @@
 #include "core/toqvalue.h"
 #include "core/toquery.h"
 
+#include <QtGui/qvalidator.h>
+
 toOracleSetting::toOracleSetting(QWidget *parent)
     : QWidget(parent)
     , toSettingTab("database.html#oracle")