Index: trunk/ppMerge/src/ppMergeConfig.c
===================================================================
--- trunk/ppMerge/src/ppMergeConfig.c	(revision 5860)
+++ trunk/ppMerge/src/ppMergeConfig.c	(revision 5862)
@@ -1,3 +1,3 @@
-# include "ppImage.h"
+# include "ppMerge.h"
 
 bool ppMergeConfig (ppConfig *config, int argc, char **argv) {
@@ -20,8 +20,9 @@
     psMetadataAddS32(config->arguments, PS_LIST_TAIL, "-zero",  0, "Name of the mask image", 0);
     psMetadataAddS32(config->arguments, PS_LIST_TAIL, "-scale", 0, "Chip number to process (if positive)", 1);
+    psMetadataAddS32(config->arguments, PS_LIST_TAIL, "-chip",  0, "Chip number to process (if positive)",-1);
 
     if (! psArgumentParse(config->arguments, &argc, argv) || argc != 2) {
         printf("\nPan-STARRS Phase 2 processing\n\n");
-        printf("Usage: %s INPUT.fits OUTPUT.fits\n\n", argv[0]);
+        printf("Usage: %s OUTPUT.fits\n\n", argv[0]);
         psArgumentHelp(config->arguments);
         psFree(config->arguments);