Index: trunk/ppStack/src/ppStackMatch.c
===================================================================
--- trunk/ppStack/src/ppStackMatch.c	(revision 25467)
+++ trunk/ppStack/src/ppStackMatch.c	(revision 26051)
@@ -292,5 +292,6 @@
             int iter = psMetadataLookupS32(NULL, ppsub, "ITER"); // Rejection iterations
             float rej = psMetadataLookupF32(NULL, ppsub, "REJ"); // Rejection threshold
-            float sysError = psMetadataLookupF32(NULL, ppsub, "SYS"); // Relative systematic error in kernel
+            float kernelError = psMetadataLookupF32(NULL, ppsub, "KERNEL.ERR"); // Relative systematic error in kernel
+            float sysError = psMetadataLookupF32(NULL, ppsub, "SYS.ERR"); // Relative systematic error in images
             const char *typeStr = psMetadataLookupStr(NULL, ppsub, "KERNEL.TYPE"); // Kernel type
             pmSubtractionKernelsType type = pmSubtractionKernelsTypeFromString(typeStr); // Kernel type
@@ -404,5 +405,5 @@
                                         orders, inner, ringsOrder, binning, penalty,
                                         optimum, optWidths, optOrder, optThresh, iter, rej, sysError,
-                                        maskVal, maskBad, maskPoor, poorFrac, badFrac,
+                                        kernelError, maskVal, maskBad, maskPoor, poorFrac, badFrac,
                                         PM_SUBTRACTION_MODE_2)) {
                     psError(PS_ERR_UNKNOWN, false, "Unable to match images.");