Typo

diff --git a/web/usage.cgi b/web/usage.cgi
index 59482e9..88d7552 100755 (executable)
--- a/web/usage.cgi
+++ b/web/usage.cgi
@@ -82,7 +82,7 @@ sub die(@) {
                              pointsize => 14,
                              );
   $im->Read('label:'.join('', @_));
-  $format = 'png' unless exists($format{$format});
+  $format = 'png' unless exists($formats{$format});
   $mime_type = $formats{$format};
   print $q->header(-type=>$mime_type);
   $im->Write($format.':-');