--- readseq.c~	2003-01-25 23:48:36.000000000 +0100
+++ readseq.c	2009-08-19 09:41:28.000000000 +0200
@@ -324,7 +324,7 @@
 {
   short   i, midi;
 
-  fprintf(stderr,title);
+  fprintf(stderr, "%s", title);
   fprintf(stderr,
   "usage: readseq [-options] in.seq > out.seq\n");
   fprintf(stderr," options\n");
@@ -764,7 +764,7 @@
 
   quietly = (dopipe || (gotinputfile && (listonly || whichSeq != 0)));
 
-  if (verbose || (!quietly && !gotinputfile)) fprintf( stderr, title);
+  if (verbose || (!quietly && !gotinputfile)) fprintf( stderr, "%s", title);
   ifile = 1;
 
                             /* UI: Choose output */
@@ -961,7 +961,7 @@
               if (seqout == 0) fprintf( foo,"\\\\\\\n");
               break;
             case kASN1:
-              if (seqout == 0) fprintf( foo, kASN1headline);
+              if (seqout == 0) fprintf( foo, "%s", kASN1headline);
               break;
 
             case kPhylip: