diff --git a/src/common/Utilities/UniqueTrackablePtr.h b/src/common/Utilities/UniqueTrackablePtr.h
index 7b1d9c236db..6c90dfd2752 100644
--- a/src/common/Utilities/UniqueTrackablePtr.h
+++ b/src/common/Utilities/UniqueTrackablePtr.h
@@ -198,6 +198,12 @@ public:
 
     ~unique_weak_ptr() = default;
 
+    unique_weak_ptr& operator=(std::nullptr_t) noexcept
+    {
+        _ptr.reset();
+        return *this;
+    }
+
     void swap(unique_weak_ptr& other) noexcept
     {
         using std::swap;