trizen
diff --git a/‎Compression/High-level/gzip_file_compression.pl
+1-2 b/‎Compression/High-level/gzip_file_compression.pl
+1-2
@@ -15,8 +15,7 @@
               FORMAT  => 'gz',
              };
 
-sub usage {
-    my ($code) = @_;
+sub usage ($code = 0) {
     print <<"EOH";
 usage: $0 [options] [input file] [output file]