diff --git a/Known-issues.md b/Known-issues.md
index ed4493a..bd333d0 100644
--- a/Known-issues.md
+++ b/Known-issues.md
@@ -1,3 +1,4 @@
 * **[All]** _Add directory_ button don't support multiselection. QT limitation.
-* **[Windows]** Conversion of directories or archives that use very long file or directory names might fail.
+* **[Windows]** Windows XP is not supported. 
+* **[OS X]** Apple hardware using Core2Duo CPU is not supported.
 * **[OS X]** File association mechanism is currently disabled.
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