diff --git a/src/Memory/__OptionalScopedPtr.hpp b/src/Memory/__OptionalScopedPtr.hpp
index 58c15c2..2590c41 100644
--- a/src/Memory/__OptionalScopedPtr.hpp
+++ b/src/Memory/__OptionalScopedPtr.hpp
@@ -47,7 +47,7 @@ namespace ArbUt {
         inline T* GetValue() const noexcept { return _raw; }
 
         /// @brief Get the raw underlying pointer.
-        inline T* TakeOwnership() const noexcept {
+        inline T* TakeOwnership() noexcept {
             auto raw = _raw;
             _raw = nullptr;
             return raw;
diff --git a/src/Memory/__ScopedPtr.hpp b/src/Memory/__ScopedPtr.hpp
index 80ac1ae..589b6bc 100644
--- a/src/Memory/__ScopedPtr.hpp
+++ b/src/Memory/__ScopedPtr.hpp
@@ -47,7 +47,7 @@ namespace ArbUt {
         inline T* operator->() const noexcept { return _raw; }
 
         /// @brief Get the raw underlying pointer.
-        inline T* TakeOwnership() const noexcept {
+        inline T* TakeOwnership() noexcept {
             auto raw = _raw;
             _raw = nullptr;
             return raw;