--- OLD/pnm/fitstopnm.c	Thu Jan  1 00:00:00 1970
+++ NEW/pnm/fitstopnm.c	Thu Jan  1 00:00:00 1970
@@ -38,7 +38,7 @@
 /* #include <values.h> */
 #include <float.h>
 
-static struct FITS_Header {
+struct FITS_Header {
   int simple;		/* basic format or not */
   int bitpix;		/* number of bits per pixel */
   int naxis;		/* number of axes */