Index: /trunk/ippTools/src/regtool.c
===================================================================
--- /trunk/ippTools/src/regtool.c	(revision 8286)
+++ /trunk/ippTools/src/regtool.c	(revision 8287)
@@ -665,5 +665,5 @@
     }
     if (isnan(ra)) {
-        psError(PS_ERR_UNKNOWN, true, "-airmass is required");
+        psError(PS_ERR_UNKNOWN, true, "-ra is required");
         return false;
     }