diff --git a/Knossos.NET/Classes/KnUtils.cs b/Knossos.NET/Classes/KnUtils.cs
index 6c25c9c0..18f81af5 100644
--- a/Knossos.NET/Classes/KnUtils.cs
+++ b/Knossos.NET/Classes/KnUtils.cs
@@ -676,8 +676,11 @@ public static string GetCachePath()
                 if (localFile != null)
                 {
                     var fileStream = new FileStream(localFile, FileMode.Open, FileAccess.Read, FileShare.Read);
-                    if(fileStream.Length == 0)
+                    if (fileStream.Length == 0)
+                    { 
+                        fileStream.Dispose();
                         return null;
+                    }
                     return fileStream;
                 }
             }