Overlapping particle systems

Hello,

I have two particle systems -- one is my player and another is a dust cloud that follows the player. Both are emitted from the same location.

Normally, it works great -- the player appears inside the dust cloud. However, when moving away from the camera, the dust cloud is drawn on top of the player. This looks incorrect.

Is there a way to force my player (which is a particle system) to always be drawn on top of the dust cloud particle system?

Thank you