diff --git a/runtime/Sources/Renderer/Descriptor.cpp b/runtime/Sources/Renderer/Descriptor.cpp
index 5fb07bc..96e8b57 100644
--- a/runtime/Sources/Renderer/Descriptor.cpp
+++ b/runtime/Sources/Renderer/Descriptor.cpp
@@ -234,6 +234,7 @@ namespace mlx
 	void DescriptorSet::Reallocate(std::size_t frame_index) noexcept
 	{
 		MLX_PROFILE_FUNCTION();
+		Assert(!p_pools_manager, "invalid pools manager");
 		m_set[frame_index] = p_pools_manager->GetAvailablePool().AllocateDescriptorSet(frame_index, m_set_layout);
 	}
 }