--- gen-fib.c	2010-01-07 12:09:02.000000000 -0800
+++ gen-fib.c	2011-05-02 12:12:20.321335724 -0700
@@ -72,7 +72,7 @@
   printf ("/* This file generated by gen-fib.c - DO NOT EDIT. */\n");
   printf ("\n");
   printf ("#if GMP_NUMB_BITS != %d\n", numb_bits);
-  printf ("Error, error, this data is for %d bits\n", numb_bits);
+  printf ("#error \"this data is for %d bits\"\n", numb_bits);
   printf ("#endif\n");
   printf ("\n");
   printf ("#define FIB_TABLE_LIMIT         %d\n", fib_limit);