diff --git a/DiscImageChef.Filters/ForcedSeekStream.cs b/DiscImageChef.Filters/ForcedSeekStream.cs
index bf710eb6..75a63a67 100644
--- a/DiscImageChef.Filters/ForcedSeekStream.cs
+++ b/DiscImageChef.Filters/ForcedSeekStream.cs
@@ -234,7 +234,15 @@ namespace DiscImageChef.Filters
 
         public override void Close()
         {
-            backStream.Close();
+            if(backStream!=null)
+                backStream.Close();
+            File.Delete(backFile);
+        }
+
+        ~ForcedSeekStream()
+        {
+            if(backStream != null)
+                backStream.Close();
             File.Delete(backFile);
         }
     }