diff --git a/panda/src/particlesystem/particleSystemManager.h b/panda/src/particlesystem/particleSystemManager.h
index 4d017fb5f4..abbae0a946 100644
--- a/panda/src/particlesystem/particleSystemManager.h
+++ b/panda/src/particlesystem/particleSystemManager.h
@@ -29,8 +29,8 @@
 // Description : Manages a set of individual ParticleSystem objects,
 //               so that each individual one doesn't have to be
 //               updated and rendered every frame
+//    See Also : particleSystemManager.cxx
 ////////////////////////////////////////////////////////////////////
-
 class EXPCL_PANDAPHYSICS ParticleSystemManager {
 PUBLISHED:
   ParticleSystemManager(int every_nth_frame = 1);