diff -up netpbm-10.35.60/editor/ppmfade.ppmfadeusage netpbm-10.35.60/editor/ppmfade
--- netpbm-10.35.60/editor/ppmfade.ppmfadeusage	2009-02-26 17:43:14.000000000 +0100
+++ netpbm-10.35.60/editor/ppmfade	2009-02-26 17:43:44.000000000 +0100
@@ -36,6 +36,8 @@ my $mode = $SPREAD;		# default fading mo
 #
 #  Check those command line args.
 #
+sub usage();
+
 if (@ARGV == 0) {
     usage();
 }