diff --git a/src/Memory/NonNullOwnPtr.hpp b/src/Memory/NonNullOwnPtr.hpp
index ea50678..3a18a33 100644
--- a/src/Memory/NonNullOwnPtr.hpp
+++ b/src/Memory/NonNullOwnPtr.hpp
@@ -13,7 +13,6 @@ namespace Arbutils::Memory {
         inline explicit NonNullOwnPtr(T* ptr) : _ptr(ptr) { AssertNotNull(ptr); };
 
         NonNullOwnPtr<T>(const NonNullOwnPtr<T>&) = delete;
-        NonNullOwnPtr<T>& operator=(OwnPtr<T> const&) = delete;
 
         inline ~NonNullOwnPtr() noexcept { delete _ptr; }
 
diff --git a/src/Memory/OwnPtr.hpp b/src/Memory/OwnPtr.hpp
index b0c5d13..c18c3b7 100644
--- a/src/Memory/OwnPtr.hpp
+++ b/src/Memory/OwnPtr.hpp
@@ -12,7 +12,6 @@ namespace Arbutils::Memory {
         inline explicit constexpr OwnPtr(T* ptr) noexcept : _ptr(ptr){};
 
         OwnPtr<T>(const OwnPtr<T>&) = delete;
-        OwnPtr<T>& operator=(OwnPtr<T> const&) = delete;
 
         inline ~OwnPtr() noexcept { delete _ptr; }