diff --git a/Build-Linux.md b/Build-Linux.md
index c3ef227..e55809a 100644
--- a/Build-Linux.md
+++ b/Build-Linux.md
@@ -72,7 +72,9 @@ wxWidgets-3.1.5$ make -j4 && make install
 ```
 
 ### Build CubicSDR
-_Note: add ``` -DUSE_HAMLIB=1 ``` to cmake command line to include hamlib support._
+*Notes:*
+  - Add ``` -DUSE_HAMLIB=1 ``` to cmake command line to include hamlib support.
+  - For RasberryPi4, add ``` -DOTHER_LIBS="libatomic" ```
 ```bash
 $ git clone https://github.com/cjcliffe/CubicSDR.git
 CubicSDR$ cd CubicSDR