diff --git a/corsika/framework/geometry/FourVector.hpp b/corsika/framework/geometry/FourVector.hpp
index c4f8cf1ac0916a1cd4ce10c4c9d5fd6fbb068c48..8290493050e7e971b3556c442b35c4980429392b 100644
--- a/corsika/framework/geometry/FourVector.hpp
+++ b/corsika/framework/geometry/FourVector.hpp
@@ -10,7 +10,6 @@
 
 #include <corsika/framework/core/PhysicalUnits.hpp>
 #include <corsika/framework/geometry/Vector.hpp>
-#include <iostream>
 #include <type_traits>
 
 namespace corsika {
diff --git a/tests/framework/testFourVector.cpp b/tests/framework/testFourVector.cpp
index 52649da252fd69d6f722def95254abf27d7c3886..b4cda441b9c9d9328d4812ad73c6a95ec3d9f571 100644
--- a/tests/framework/testFourVector.cpp
+++ b/tests/framework/testFourVector.cpp
@@ -16,7 +16,6 @@
 #include <corsika/framework/geometry/Vector.hpp>
 
 using namespace corsika;
-using namespace corsika::units::si;
 
 TEST_CASE("four vectors") {