Index: trunk/ppStack/src/ppStackMatch.c
===================================================================
--- trunk/ppStack/src/ppStackMatch.c	(revision 19670)
+++ trunk/ppStack/src/ppStackMatch.c	(revision 20098)
@@ -249,5 +249,5 @@
             // Set the variance factor
             psMetadataItem *vfItem = psMetadataLookup(readout->parent->concepts, "CELL.VARFACTOR");
-            float vf = psMetadataLookupF32(NULL, output->analysis, PM_SUBTRACTION_ANALYSIS_VARFACTOR);
+            float vf = psMetadataLookupF32(NULL, output->analysis, PM_SUBTRACTION_ANALYSIS_VARFACTOR_1);
             if (!isfinite(vf)) {
                 vf = 1.0;