--- netpbm-10.35/converter/other/pnmtotiffcmyk.c.glibc	2006-09-18 12:20:06.000000000 +0200
+++ netpbm-10.35/converter/other/pnmtotiffcmyk.c	2007-08-23 09:18:30.000000000 +0200
@@ -974,8 +974,8 @@ int main( int argc, char **argv ) {
 
   if ( (err = parseOpts( argc, argv, rt )) ) goto exit ;
   
-  if ( (err = rt->in->open( rt->in, rt )) ) goto exit ;
-  if ( (err = rt->out->open( rt->out, rt )) ) goto exit ;
+  if ( (err = (rt->in->open)( rt->in, rt )) ) goto exit ;
+  if ( (err = (rt->out->open)( rt->out, rt )) ) goto exit ;
 
   while ( rt->in->hasMore( rt->in ) ) {
     if ( (err = rt->in->next( rt->in, &r, &g, &b )) ) goto exit ;