Index: trunk/ppStack/src/ppStackMatch.c
===================================================================
--- trunk/ppStack/src/ppStackMatch.c	(revision 19475)
+++ trunk/ppStack/src/ppStackMatch.c	(revision 19484)
@@ -106,4 +106,18 @@
             }
             psFitsClose(fits);
+
+            // Add in variance factor
+            pmSubtractionKernels *kernels = psMetadataLookupPtr(NULL, output->analysis,
+                                                                PM_SUBTRACTION_ANALYSIS_KERNELS); // Kernels
+            float vf = pmSubtractionVarianceFactor(kernels, 0.0, 0.0, false); // Variance factor
+            psMetadataItem *vfItem = psMetadataLookup(output->parent->concepts, "CELL.VARFACTOR");
+            if (!isfinite(vf)) {
+                vf = 1.0;
+            }
+            if (isfinite(vfItem->data.F32)) {
+                vfItem->data.F32 *= vf;
+            } else {
+                vfItem->data.F32 = vf;
+            }
         }