diff --git a/corsika/detail/modules/ObservationPlane.inl b/corsika/detail/modules/ObservationPlane.inl
index 3f11726d59b20b5d124acac90c2bc54a9111c936..0f3b6b29aaff4a1d9c7bec879e23dcffc09debb2 100644
--- a/corsika/detail/modules/ObservationPlane.inl
+++ b/corsika/detail/modules/ObservationPlane.inl
@@ -43,9 +43,9 @@ namespace corsika {
     auto const displacement = trajectory.getPosition(1) - plane_.getCenter();
 
     // add our particles to the output file stream
-    this->write(particle.getPID(), energy, displacement.dot(xAxis_),
-                displacement.dot(yAxis_),
-                (trajectory.getPosition(1) - plane_.getCenter()).getNorm());
+    this->write(particle.getPID(), energy,
+                displacement.dot(xAxis_),
+                displacement.dot(yAxis_));
 
     if (deleteOnHit_) {
       count_ground_++;
diff --git a/corsika/detail/modules/writers/ObservationPlaneWriterParquet.inl b/corsika/detail/modules/writers/ObservationPlaneWriterParquet.inl
index 8599c4684e5715548a09e7e16fa9100fe7a850ac..76ae3af1c9728174175f09b219ece9f8a5145952 100644
--- a/corsika/detail/modules/writers/ObservationPlaneWriterParquet.inl
+++ b/corsika/detail/modules/writers/ObservationPlaneWriterParquet.inl
@@ -28,8 +28,6 @@ namespace corsika {
              parquet::ConvertedType::NONE);
     addField("y", parquet::Repetition::REQUIRED, parquet::Type::FLOAT,
              parquet::ConvertedType::NONE);
-    addField("radius", parquet::Repetition::REQUIRED, parquet::Type::FLOAT,
-             parquet::ConvertedType::NONE);
 
     // and build the streamer
     buildStreamer();
@@ -42,13 +40,12 @@ namespace corsika {
   void ObservationPlaneWriterParquet::write(Code const& pid,
                                             units::si::HEPEnergyType const& energy,
                                             units::si::LengthType const& x,
-                                            units::si::LengthType const& y,
-                                            units::si::LengthType const& radius) {
+                                            units::si::LengthType const& y) {
     using namespace units::si;
 
     // write the next row - we must write `shower_` first.
     (*writer_) << shower_ << static_cast<int>(get_PDG(pid)) << energy / 1_eV << x / 1_m
-               << y / 1_m << radius / 1_m << parquet::EndRow;
+               << y / 1_m << parquet::EndRow;
   }
 
 } // namespace corsika
diff --git a/corsika/modules/writers/ObservationPlaneWriterParquet.hpp b/corsika/modules/writers/ObservationPlaneWriterParquet.hpp
index 980fc74cff45476402daf27207887d64d8639a2d..53ec19a2e38b868833f0e29c8c6a21061fd5b452 100644
--- a/corsika/modules/writers/ObservationPlaneWriterParquet.hpp
+++ b/corsika/modules/writers/ObservationPlaneWriterParquet.hpp
@@ -48,8 +48,7 @@ namespace corsika {
      * Write a particle to the file.
      */
     void write(Code const& pid, units::si::HEPEnergyType const& energy,
-               units::si::LengthType const& x, units::si::LengthType const& y,
-               units::si::LengthType const& radius);
+               units::si::LengthType const& x, units::si::LengthType const& y);
 
   }; // class ObservationPlaneWriterParquet