diff --git a/simplify_static_dir-main.pl b/simplify_static_dir-main.pl
index 4d15c0d..9dd8579 100755
--- a/simplify_static_dir-main.pl
+++ b/simplify_static_dir-main.pl
@@ -219,7 +219,7 @@ MAIN: {
     my $report_every = 1; # seconds
     my $processed_bytes = 0;
     my $last_report = time;
-    my $total_size_hr = sprintf "%0.4G %s", Directory::Simplify::Utils::hr_size(sum(map { $_->{size} } @files) or 0);
+    my $total_size_hr = sprintf '%0.4G %s', Directory::Simplify::Utils::hr_size(sum(map { $_->{size} } @files) or 0);
     my $cb;
     if ($print_progress) {
         printf STDERR "\e\x{37}";