Index: trunk/Ohana/src/addstar/src/ReadImageHeader.c
===================================================================
--- trunk/Ohana/src/addstar/src/ReadImageHeader.c	(revision 19065)
+++ trunk/Ohana/src/addstar/src/ReadImageHeader.c	(revision 19130)
@@ -19,6 +19,6 @@
   // XXX currently, image uses an unsigned short for NX,XY. this is rather restrictive
   // and needs to be at least checked.
-  gfits_scan (header, "NAXIS1",   "%d", 1, &Nx);
-  gfits_scan (header, "NAXIS2",   "%d", 1, &Ny);
+  haveNx = gfits_scan (header, "NAXIS1",   "%d", 1, &Nx);
+  haveNy = gfits_scan (header, "NAXIS2",   "%d", 1, &Ny);
 
   if (!haveNx && !haveNy) {