diff --git a/lib/util.js b/lib/util.js
index 947667f..ebfd251 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -140,6 +140,7 @@ function frontFill(string, fill, length) {
 
 // replace illegal characters
 function replaceIllegalChars(string) {
+    // TODO: check function, seems like it doesn't work at all
     return string.replace(/[/\\:*?"<>|]/g, '-');
 }
 
@@ -167,4 +168,4 @@ exports.moveFile = moveFile;
 exports.getPathByMetadata = getPathByMetadata;
 exports.frontFill = frontFill;
 exports.readDirRecursive = readDirRecursive;
-exports.getTimeDiff = getTimeDiff;
\ No newline at end of file
+exports.getTimeDiff = getTimeDiff;