diff --git a/test/BB2B_Test.cc b/test/BB2B_Test.cc
index 8e446c9..a6c30db 100644
--- a/test/BB2B_Test.cc
+++ b/test/BB2B_Test.cc
@@ -2,12 +2,12 @@
 
 // #include <gmock/gmock.h>
 // not supported using Visual Studio 2022 compiler...
-#include <gtest/gtest.h>
-
 #include "../DifferentialDrive.h"
 #include "../DistanceSensor.h"
 #include "../LinearAlgebra/Angle.h"
 #include "../Roboid.h"
+#include <gtest/gtest.h>
+#include <math.h>
 
 /// @brief A Distance sensor with testing support
 /// With this sensor it is possible to simulate a measurement