diff --git a/kernel_build/build.sh b/kernel_build/build.sh
index 28f0fc24b..52e58a5d9 100755
--- a/kernel_build/build.sh
+++ b/kernel_build/build.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+echo -e "If you have some errors when trying to rebuild, delete ./out dir"
 
 FIRE_VERSION="1.0"