diff --git a/installation_part2.sh b/installation_part2.sh
index 82b15f8..f9be67f 100644
--- a/installation_part2.sh
+++ b/installation_part2.sh
@@ -122,7 +122,7 @@ echo -e "${GREEN}    Installation Complete!${NC}"
 echo "=========================================="
 
 # Get Raspberry Pi serial number (last 8 characters)
-serial_number=$(cat /proc/cpuinfo | grep Serial | awk '{print substr($3, length($3) - 7)}')
+serial_number=$(cat /proc/cpuinfo | grep Serial | awk '{print substr($3, length($3) - 7)}' | tr '[:lower:]' '[:upper:]')
 echo -e "${BLUE}Device ID (Serial):${NC} $serial_number"
 
 # Get IP addresses