diff --git a/InstallationGuide.md b/InstallationGuide.md
index ab17a308..44045139 100644
--- a/InstallationGuide.md
+++ b/InstallationGuide.md
@@ -12,6 +12,8 @@ Hardware Requirements
 
 Please see the [Hardware Compatibility List](/wiki/HCL) page for more information on required and recommended hardware.
 
+Note: We don't recommend installing Qubes in a virtual machine! It will likely not work. Don't send emails asking about it.
+
 Download installer ISO
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