Index: trunk/ppSim/src/ppSimLoop.c
===================================================================
--- trunk/ppSim/src/ppSimLoop.c	(revision 30618)
+++ trunk/ppSim/src/ppSimLoop.c	(revision 41173)
@@ -51,5 +51,8 @@
 
         // Add random stars
-        if (!ppSimMakeStarGrid (stars, fpa, config, rng)) ESCAPE (PS_ERR_UNKNOWN, "failed to make random stars");
+        if (!ppSimMakeStarGrid (stars, fpa, config, rng)) ESCAPE (PS_ERR_UNKNOWN, "failed to make star grid");
+
+        // Add random stars
+        if (!ppSimMakeStarCluster (stars, fpa, config, rng)) ESCAPE (PS_ERR_UNKNOWN, "failed to make cluster stars");
 
         // Add random galaxies