diff --git a/docs/device-categorization.md b/docs/device-categorization.md
index a8b22e5ba..dbf076b0b 100644
--- a/docs/device-categorization.md
+++ b/docs/device-categorization.md
@@ -108,6 +108,7 @@ Requirements:
 
 * Must run a close-to-mainline kernel as new or newer than the oldest supported LTS release
   * The kernel version does not need to be the latest released patch version
+* Kernel must be compiled with LLVM
 * Port and dependencies build
 * The device boots