Index: trunk/ppImage/src/ppFocusArguments.c
===================================================================
--- trunk/ppImage/src/ppFocusArguments.c	(revision 7706)
+++ trunk/ppImage/src/ppFocusArguments.c	(revision 7738)
@@ -2,5 +2,5 @@
 
 static void usage (void) {
-    fprintf (stderr, "USAGE: ppFocus [-file INPUT.fits] [-list INPUT.txt] OUTPUT\n");
+    fprintf (stderr, "USAGE: ppFocus [-file focus.*.fits] [-list INPUT.txt] OUTPUT\n");
     exit (2);
 }