diff --git a/tools/fimg2fits.c b/tools/fimg2fits.c
index 43564f1..7a0b388 100644
--- a/tools/fimg2fits.c
+++ b/tools/fimg2fits.c
@@ -32,21 +32,23 @@ if (foo) {
 
 fimg_destroy(&fimg);
 
-return -1;
+return 0;
 }
 /* ----------------------------------------------------------------- */
 static void help(int k)
 {
 puts("export to FITS format");
 puts("\t-p  select colorplane : R, G, B");
+puts("\t    default is blue");
+puts("\t-v  increase verbosity");
 fimg_print_version(k);
 }
 /* ----------------------------------------------------------------- */
 
 int main(int argc, char *argv[])
 {
-int		opt;
-int		plane = '?';
+int		opt, foo;
+int		plane = 'b';
 
 while ((opt = getopt(argc, argv, "p:hv")) != -1) {
 	switch(opt) {
@@ -62,8 +64,11 @@ if (2 != argc-optind) {
 	exit(1);
 	}
 
-export_fimg_plane_as_fits(argv[optind], argv[optind+1], plane);
-
+foo = export_fimg_plane_as_fits(argv[optind], argv[optind+1], plane);
+if (foo) {
+	fprintf(stderr, "export_fimg_plane_as_fits --> %d\n", foo);
+	exit(1);
+	}
 return 0;
 }
 /* ----------------------------------------------------------------- */