diff --git a/Tests/VectorUtils.h b/Tests/VectorUtils.h
index f59d59311cbc09d44d925c26e01db256c9bf3040..a8548415588c2ecfc67cd5699d3c761afe825b7c 100644
--- a/Tests/VectorUtils.h
+++ b/Tests/VectorUtils.h
@@ -11,6 +11,8 @@
 #include "MathLib/LinAlg/MatrixVectorTraits.h"
 #include "MathLib/LinAlg/UnifiedMatrixSetters.h"
 
+#pragma once
+
 template <typename Vector>
 void fillVectorRandomly(Vector& x)
 {