diff --git a/Quick-Start-2018.md b/Quick-Start-2018.md
index 699ced7..5e55872 100644
--- a/Quick-Start-2018.md
+++ b/Quick-Start-2018.md
@@ -5,6 +5,7 @@ Choose a target platform:
 [Windows] [Linux] [Mac] [Android] [iPhone] [Web] [Web+Wasm] [Haiku] [Genode] [Nintendo Switch]
 
 Note: Instructions for cross compilation are here.
+(only these combinations work: ...)
 
 2) Set up your environment, our recommendation. Please choose a platform: 
 ...