diff --git a/projects/arradio/README.md b/projects/arradio/README.md
index 31635754c03..c60f9761ae3 100644
--- a/projects/arradio/README.md
+++ b/projects/arradio/README.md
@@ -3,6 +3,7 @@
 - Evaluation board product page: [ARRADIO](https://www.terasic.com.tw/cgi-bin/page/archive.pl?No=946)
 - System documentation: https://wiki.analog.com/resources/eval/user-guides/arradio/quickstart/alterasockit
 - HDL project documentation: http://analogdevicesinc.github.io/hdl/projects/arradio/index.html
+- Evaluation board for VADJ: 2.5V
 
 ## Supported parts
 
diff --git a/projects/arradio/c5soc/README.md b/projects/arradio/c5soc/README.md
index fd94529b75d..1a61614f24e 100644
--- a/projects/arradio/c5soc/README.md
+++ b/projects/arradio/c5soc/README.md
@@ -1,5 +1,9 @@
+<!-- no_build_example, no_no_os -->
+
 # ARRADIO/C5SOC HDL Project
 
+- VADJ with which it was tested in hardware: 2.5V
+
 ## Building the project
 
 ```