diff --git a/corsika/detail/media/MediumPropertyModel.inl b/corsika/detail/media/MediumPropertyModel.inl
index 604175989c410c8ae129b1d2012631dc29c49cc1..a3f7d3ff3cc2f8eb909111aeb836a5a04e875720 100644
--- a/corsika/detail/media/MediumPropertyModel.inl
+++ b/corsika/detail/media/MediumPropertyModel.inl
@@ -19,7 +19,7 @@ namespace corsika {
       , medium_(medium) {}
 
   template <typename T>
-  inline Medium MediumPropertyModel<T>::getMedium(Point const&) const {
+  inline Medium MediumPropertyModel<T>::getMedium() const {
     return medium_;
   }
 
diff --git a/corsika/detail/modules/proposal/ProposalProcessBase.inl b/corsika/detail/modules/proposal/ProposalProcessBase.inl
index 404e713b726a0a1ab6998721f1e3558daa08e053..936798ea1cd05340ba2f0c4b397d5af9c47a068e 100644
--- a/corsika/detail/modules/proposal/ProposalProcessBase.inl
+++ b/corsika/detail/modules/proposal/ProposalProcessBase.inl
@@ -32,8 +32,7 @@ namespace corsika::proposal {
     _env.getUniverse()->walk([&](auto& vtn) {
       if (vtn.hasModelProperties()) {
         const auto& prop = vtn.getModelProperties();
-        const auto& medium = mediumData(
-            prop.getMedium(Point(_env.getCoordinateSystem(), 0_cm, 0_cm, 0_cm)));
+        const auto& medium = mediumData(prop.getMedium());
 
         auto comp_vec = std::vector<PROPOSAL::Component>();
         const auto& comp = prop.getNuclearComposition();
@@ -57,8 +56,8 @@ namespace corsika::proposal {
     PROPOSAL::InterpolationSettings::TABLES_PATH = corsika_data("PROPOSAL").c_str();
   }
 
-  inline size_t ProposalProcessBase::hash::operator()(const calc_key_t& p) const
-      noexcept {
+  inline size_t ProposalProcessBase::hash::operator()(
+      const calc_key_t& p) const noexcept {
     return p.first ^ std::hash<Code>{}(p.second);
   }
 
diff --git a/corsika/media/IMediumPropertyModel.hpp b/corsika/media/IMediumPropertyModel.hpp
index 4455a6242be0ecf5a5098ed19da7685879597565..860fa22da0e5d8d09ea4b9dbb9aeb8219cfc0492 100644
--- a/corsika/media/IMediumPropertyModel.hpp
+++ b/corsika/media/IMediumPropertyModel.hpp
@@ -31,7 +31,7 @@ namespace corsika {
      * @param  point    The location to evaluate at.
      * @returns    The media type
      */
-    virtual Medium getMedium(Point const&) const = 0;
+    virtual Medium getMedium() const = 0;
 
     /**
      * A virtual default destructor.
diff --git a/corsika/media/MediumPropertyModel.hpp b/corsika/media/MediumPropertyModel.hpp
index 7833599c63b9806f39b19e581b1846bc5f2b58ec..ab89a8a543a0d25da648d06e45d34adfb5cecec1 100644
--- a/corsika/media/MediumPropertyModel.hpp
+++ b/corsika/media/MediumPropertyModel.hpp
@@ -36,7 +36,7 @@ namespace corsika {
      * @param  point    The location to evaluate at.
      * @returns    The medium type as enum environment::Medium
      */
-    Medium getMedium(Point const&) const override;
+    Medium getMedium() const override;
 
     /**
      * Set the medium type.
diff --git a/tests/media/testMedium.cpp b/tests/media/testMedium.cpp
index bb5a9f0e86bb7398df1480844829fba1bf26f83c..fb55aaa59aa28d1aef411a4f31b143cdd50dd21a 100644
--- a/tests/media/testMedium.cpp
+++ b/tests/media/testMedium.cpp
@@ -68,10 +68,7 @@ TEST_CASE("MediumPropertyModel w/ Homogeneous") {
   AtmModel medium(type, density, protonComposition);
 
   // and require that it is constant
-  CHECK(type == medium.getMedium(Point(gCS, -10_m, 4_m, 35_km)));
-  CHECK(type == medium.getMedium(Point(gCS, +210_m, 0_m, 7_km)));
-  CHECK(type == medium.getMedium(Point(gCS, 0_m, 0_m, 0_km)));
-  CHECK(type == medium.getMedium(Point(gCS, 100_km, 400_km, 350_km)));
+  CHECK(type == medium.getMedium());
 
   // a new refractive index
   const Medium type2 = corsika::Medium::StandardRock;
@@ -80,10 +77,7 @@ TEST_CASE("MediumPropertyModel w/ Homogeneous") {
   medium.setMedium(type2);
 
   // check that the returned refractive index is correct
-  CHECK(type2 == medium.getMedium(Point(gCS, -10_m, 4_m, 35_km)));
-  CHECK(type2 == medium.getMedium(Point(gCS, +210_m, 0_m, 7_km)));
-  CHECK(type2 == medium.getMedium(Point(gCS, 0_m, 0_m, 0_km)));
-  CHECK(type2 == medium.getMedium(Point(gCS, 100_km, 400_km, 350_km)));
+  CHECK(type2 == medium.getMedium());
 
   // define our axis vector
   Vector const axis(gCS, QuantityVector<dimensionless_d>(0, 0, 1));