diff --git a/site-generator b/site-generator
index 1171443..c81cffc 100755
--- a/site-generator
+++ b/site-generator
@@ -303,7 +303,7 @@ sub get_filename {
 		else {
 			$filename = $$config{'filename'};
 			my $padded_index = "";
-			if (exists $$config{'id'}) {
+			if (exists $$config{'id'} && $$config{'id'} ne "") {
 				$padded_index = sprintf("%04d", $$config{'id'});
 			}
 			$filename =~ s/\[id\]/$padded_index/;