diff --git a/Known-issues.md b/Known-issues.md
index 844d884..cd34fae 100644
--- a/Known-issues.md
+++ b/Known-issues.md
@@ -1,4 +1,2 @@
 * **[All]** _Add directory_ button don't support multiselection. QT limitation.
-* **[All]** PNG files using RBGA palette crash conversion. Pillow 2.4.0 bug. 
-* **[Linux]** On GTK-based desktop environments clicking _Add directory_ or _Add file_ button might display additional black window. QT bug.
-* **[Linux]** Lack of tray icon. Disabled intentionally due to multiple QT bugs.
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+* **[All]** PNG files using RBGA palette crash conversion. Pillow 2.4.0 bug.
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