diff --git a/Known-issues.md b/Known-issues.md
index fa5b7dc..ff04543 100644
--- a/Known-issues.md
+++ b/Known-issues.md
@@ -1,3 +1,4 @@
 * **[All]** _Add directory_ button don't support multiselection. QT limitation.
+* **[Windows]** Application don't work on Windows XP. It is not supported anymore.
 * **[Windows]** 32 bit release might be detected by as malware. False positive caused by py2exe.
 * **[Linux/OS X]** PNG files using RBGA palette might crash conversion. Pillow 2.4.0 bug.
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