diff --git a/Core/include/Acts/Geometry/CylinderVolumeBounds.hpp b/Core/include/Acts/Geometry/CylinderVolumeBounds.hpp
index 1951d96b2da..002af04cd59 100644
--- a/Core/include/Acts/Geometry/CylinderVolumeBounds.hpp
+++ b/Core/include/Acts/Geometry/CylinderVolumeBounds.hpp
@@ -128,7 +128,7 @@ class CylinderVolumeBounds : public VolumeBounds {
   /// Copy Constructor
   ///
   /// @param cylbo is the source cylinder volume bounds for the copy
-  CylinderVolumeBounds(const CylinderVolumeBounds& cylbo) = default;
+  CylinderVolumeBounds(const CylinderVolumeBounds& cylbo);
 
   ~CylinderVolumeBounds() override = default;
   CylinderVolumeBounds& operator=(const CylinderVolumeBounds& cylbo) = default;
diff --git a/Core/src/Geometry/CylinderVolumeBounds.cpp b/Core/src/Geometry/CylinderVolumeBounds.cpp
index c7bb8192f4a..d9af620ea45 100644
--- a/Core/src/Geometry/CylinderVolumeBounds.cpp
+++ b/Core/src/Geometry/CylinderVolumeBounds.cpp
@@ -309,4 +309,7 @@ void CylinderVolumeBounds::set(
   }
 }
 
+CylinderVolumeBounds::CylinderVolumeBounds(const CylinderVolumeBounds& cylbo) =
+    default;
+
 }  // namespace Acts