diff --git a/lib/Directory/Simplify/FileHash.pm b/lib/Directory/Simplify/FileHash.pm
index a45ec4b..e3c827a 100644
--- a/lib/Directory/Simplify/FileHash.pm
+++ b/lib/Directory/Simplify/FileHash.pm
@@ -22,16 +22,9 @@ sub new {
 }
 
 sub add {
-    my $self = shift;
-    my (@files, $callback);
-    if (ref $_[0] eq 'HASH') {
-        # Called method like { files => [] }
-        my %opts = %{$_[0]};
-        @files = @{$opts{files}};
-        $callback = $opts{callback};
-    } else {
-        @files = @_;
-    }
+    my ($self, %args) = @_;
+    my @files = @{$args{files}};
+    my $callback = $args{callback};
     foreach my $file (@files) {
         unless (ref $file eq 'Directory::Simplify::File') {
             $file = Directory::Simplify::File->new($file);
diff --git a/simplify_static_dir-main.pl b/simplify_static_dir-main.pl
index 6b5577f..9dc2cc7 100755
--- a/simplify_static_dir-main.pl
+++ b/simplify_static_dir-main.pl
@@ -230,10 +230,10 @@ MAIN: {
             }
         };
     }
-    $filehash->add({
+    $filehash->add(
         files => \@files,
         callback => $cb,
-    });
+    );
     print STDERR "done.\n"
         if $verbose;