diff --git a/Framework/Geometry/Trajectory.h b/Framework/Geometry/Trajectory.h
index 47f498d8a8e90a8f526b1a445279f7e47f8a537f..4f1a84242aebb92d3dd975669c4b9d45d03ccf97 100644
--- a/Framework/Geometry/Trajectory.h
+++ b/Framework/Geometry/Trajectory.h
@@ -43,7 +43,7 @@ namespace corsika::geometry {
     LineTrajectory() = delete;
     LineTrajectory(const LineTrajectory&) = default;
     LineTrajectory(LineTrajectory&&) = default;
-    LineTrajectory& operator=(const LineTrajectory&) = default;
+    LineTrajectory& operator=(const LineTrajectory&) = delete;
     LineTrajectory(Line const& theLine, corsika::units::si::TimeType timeLength)
         : line_(theLine)
         , timeLength_(timeLength)