diff --git a/Outputs/YAML.hpp b/Outputs/YAML.hpp
deleted file mode 100644
index 9d1232d912f9327b681ccd89a1474e0faf7db984..0000000000000000000000000000000000000000
--- a/Outputs/YAML.hpp
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * (c) Copyright 2020 CORSIKA Project, corsika-project@lists.kit.edu
- *
- * This software is distributed under the terms of the GNU General Public
- * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
- * the license.
- */
-#pragma once
-
-#include <corsika/geometry/QuantityVector.h>
-
-namespace corsika {
-
-  template <typename TDim>
-  YAML::Emitter& operator<<(YAML::Emitter& out,
-                            geometry::QuantityVector<TDim> const& vec) {
-    out << YAML::Flow;
-    out << YAML::BeginSeq << v.x << v.y << v.z << YAML::EndSeq;
-    return out;
-  }
-
-} // namespace corsika