diff --git a/app/lib/fslogger.js b/app/lib/fslogger.js
index fad4453..f39de56 100644
--- a/app/lib/fslogger.js
+++ b/app/lib/fslogger.js
@@ -216,8 +216,8 @@ FsLogger.prototype._deleteOldFiles = function(folder, callback) {
 
     files.forEach(function(file) {
       if (
-        (file.indexOf('.log')) &&
-        (file.indexOf('StorjDrive')) &&
+        (file.indexOf('.log') !== -1) &&
+        (file.indexOf('StorjDrive') !== -1) &&
         (file.indexOf(days[0]) === -1) &&
         (file.indexOf(days[1]) === -1)
       ) {