diff --git a/corsika/framework/core/PhysicalConstants.hpp b/corsika/framework/core/PhysicalConstants.hpp
index 026d93a115bdf369afaa1effdfff217593a1b88e..92df20c2018ef382aac191517116d98363155f25 100644
--- a/corsika/framework/core/PhysicalConstants.hpp
+++ b/corsika/framework/core/PhysicalConstants.hpp
@@ -65,7 +65,8 @@ namespace corsika::constants {
    */
   namespace EarthRadius {
     static constexpr auto Mean{6'371'000 * meter};
-    static constexpr auto Eqautorial{6'378'137 * meter};
+    static constexpr auto Geomagnetic_reference{6'371'200 * meter};
+    static constexpr auto Equatorial{6'378'137 * meter};
     static constexpr auto Polar{6'356'752 * meter};
     static constexpr auto PolarCurvature{6'399'593 * meter};
   } // namespace EarthRadius