diff --git a/SBC/rpi-4/releases/dev/pihpsdr_install.sh b/SBC/rpi-4/releases/dev/pihpsdr_install.sh
index 10e6a40..874124f 100644
--- a/SBC/rpi-4/releases/dev/pihpsdr_install.sh
+++ b/SBC/rpi-4/releases/dev/pihpsdr_install.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 echo "Installation wdsp or pihpsdr"
+echo "----------------------------"
+echo "NOTE. Before building and installing pihpsdr you should to install wdsp."
 echo ""
 
 echo "What do you like to install [wdsp/pihpsdr/reboot] ?"