Index: trunk/psphot/src/psphotSourceFits.c
===================================================================
--- trunk/psphot/src/psphotSourceFits.c	(revision 8437)
+++ trunk/psphot/src/psphotSourceFits.c	(revision 8469)
@@ -84,4 +84,5 @@
 
 	// otherwise, supply the resulting model to the corresponding blend
+	psFree(blend->modelPSF);
 	blend->modelPSF = psMemIncrRefCounter (model);
 	psTrace ("psphot.blend", 5, "fitted blend as PSF\n");