diff --git a/ApplicationLibCode/Commands/RicPolygonFromImageDialog.cpp b/ApplicationLibCode/Commands/RicPolygonFromImageDialog.cpp
index 0ce66500d0..e780f028cc 100644
--- a/ApplicationLibCode/Commands/RicPolygonFromImageDialog.cpp
+++ b/ApplicationLibCode/Commands/RicPolygonFromImageDialog.cpp
@@ -22,6 +22,7 @@
 
 #include "RigPolygonTools.h"
 
+#include <QDialogButtonBox>
 #include <QGuiApplication>
 #include <QScreen>