Index: trunk/ppSub/src/ppSubMakePSF.c
===================================================================
--- trunk/ppSub/src/ppSubMakePSF.c	(revision 30619)
+++ trunk/ppSub/src/ppSubMakePSF.c	(revision 31156)
@@ -158,5 +158,5 @@
 psArray *ppSubSelectPSFSources(psArray *sources){
 
-    sources = psArraySort (sources, pmSourceSortBySN);
+    sources = psArraySort (sources, pmSourceSortByFlux);
 
     psArray *subset = psArrayAllocEmpty(MAX_NPSF);