Index: trunk/psphot/src/psphotBlendFit.c
===================================================================
--- trunk/psphot/src/psphotBlendFit.c	(revision 9887)
+++ trunk/psphot/src/psphotBlendFit.c	(revision 9888)
@@ -60,5 +60,7 @@
 
 	// replace object in image
-	pmModelAdd (source->pixels, source->mask, source->modelPSF, false, false);
+	if (source->mode & PM_SOURCE_MODE_SUBTRACTED) {
+	    pmModelAdd (source->pixels, source->mask, source->modelPSF, false, false);
+	}
 	Nfit ++;