Index: trunk/ppStack/src/ppStackArguments.c
===================================================================
--- trunk/ppStack/src/ppStackArguments.c	(revision 18769)
+++ trunk/ppStack/src/ppStackArguments.c	(revision 18770)
@@ -194,5 +194,5 @@
 
     if (psMetadataLookupBool(NULL, arguments, "-photometry")) {
-        psMetadataAddBool(config->arguments, PS_LIST_TAIL, "PHOTOMETRY", 0,
+        psMetadataAddBool(config->arguments, PS_LIST_TAIL, "PHOTOMETRY", PS_META_REPLACE,
                           "Do photometry on stacked image?", true);
     }
@@ -233,5 +233,5 @@
     if (psMetadataLookupBool(NULL, arguments, "-photometry") ||
         psMetadataLookupBool(NULL, recipe, "PHOTOMETRY")) {
-        psMetadataAddBool(config->arguments, PS_LIST_TAIL, "PHOTOMETRY", 0,
+        psMetadataAddBool(config->arguments, PS_LIST_TAIL, "PHOTOMETRY", PS_META_REPLACE,
                           "Do photometry on stacked image?", true);
     }