diff --git a/Core/src/Detector/detail/CylindricalDetectorHelper.cpp b/Core/src/Detector/detail/CylindricalDetectorHelper.cpp
index 4158d3e1a05..ce7973b3889 100644
--- a/Core/src/Detector/detail/CylindricalDetectorHelper.cpp
+++ b/Core/src/Detector/detail/CylindricalDetectorHelper.cpp
@@ -959,7 +959,7 @@ Acts::Experimental::detail::CylindricalDetectorHelper::connectInR(
 
     // Fuse containers, and update the attached volumes
     std::shared_ptr<Portal> innerCylinder = containers[ic - 1].find(2u)->second;
-    // Direction is explicitely up
+    // Direction is explicitly addressed with a direction index
     auto innerAttachedVolumes =
         innerCylinder
             ->attachedDetectorVolumes()[Direction(Direction::Backward).index()];