diff --git a/LightlessSync/FileCache/FileCacheManager.cs b/LightlessSync/FileCache/FileCacheManager.cs
index 43516b1..dda1d9c 100644
--- a/LightlessSync/FileCache/FileCacheManager.cs
+++ b/LightlessSync/FileCache/FileCacheManager.cs
@@ -190,7 +190,7 @@ public sealed class FileCacheManager : IHostedService
                     .Replace(_configService.Current.CacheFolder, _configService.Current.CacheFolder.EndsWith('\\') ? CachePrefix + '\\' : CachePrefix, StringComparison.OrdinalIgnoreCase)
                     .Replace("\\\\", "\\", StringComparison.Ordinal);
 
-                if (!cleanedPaths.ContainsValue(cleaned))
+                if (seenCleaned.Add(cleaned))
                 {
                     _logger.LogDebug("Adding to cleanedPaths: {cleaned}", cleaned);
                     cleanedPaths[p] = cleaned;