diff --git a/shairport.pl b/shairport.pl
index a7d00297..07401fe5 100755
--- a/shairport.pl
+++ b/shairport.pl
@@ -261,7 +261,7 @@ sub conn_handle_request {
     my ($fh, $conn) = @_;
 
     my $req = $conn->{req};;
-    my $clen = $req->header('content-length') || 0;
+    my $clen = $req->header('content-length') // 0;
     if ($clen > 0 && !length($req->content)) {
         $conn->{req_need} = $clen;
         return; # need more!