Index: trunk/Ohana/src/opihi/cmd.data/fit2d.c
===================================================================
--- trunk/Ohana/src/opihi/cmd.data/fit2d.c	(revision 2598)
+++ trunk/Ohana/src/opihi/cmd.data/fit2d.c	(revision 2843)
@@ -11,5 +11,5 @@
 
   Weight = FALSE;
-  if (N = get_argument (argc, argv, "-dy")) {
+  if ((N = get_argument (argc, argv, "-dy"))) {
     remove_argument (N, &argc, argv);
     if ((dyvec = SelectVector (argv[N], OLDVECTOR, TRUE)) == NULL) return (FALSE);