diff --git a/BUILD_LINUX.md b/BUILD_LINUX.md
index 1996360fed..8b058a1efb 100644
--- a/BUILD_LINUX.md
+++ b/BUILD_LINUX.md
@@ -171,3 +171,9 @@ If your goal is to set up a development environment, it is desirable to set the
 directory that vcpkg builds into with the `HIFI_VCPKG_BASE` environment variable.
 For example, you might set `HIFI_VCPKG_BASE` to `/home/$USER/vcpkg`.
 By default, vcpkg will build in the system `/tmp` directory.
+
+If build is intended for packaging or creation of AppImage, VIRCADIA_CPU_ARCHITECTURE
+CMake variable needs to be set to architecture specific value.
+It defaults to "-march=native -mtune=native", which yields builds optimized for particular
+machine, but builds will not work on machines lacking same CPU instructions.
+For packaging and AppImage it is recommended to set it to different value, for example "-msse3".