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-rw-r--r--src/gui/math3d/qvector4d.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/gui/math3d/qvector4d.cpp b/src/gui/math3d/qvector4d.cpp
index 3f542c1c13..a188333a3a 100644
--- a/src/gui/math3d/qvector4d.cpp
+++ b/src/gui/math3d/qvector4d.cpp
@@ -42,6 +42,7 @@
#include "qvector4d.h"
#include "qvector3d.h"
#include "qvector2d.h"
+#include <QtCore/qdatastream.h>
#include <QtCore/qdebug.h>
#include <QtCore/qvariant.h>
#include <QtCore/qmath.h>