diff --git a/dietpi/func/dietpi-set_hardware b/dietpi/func/dietpi-set_hardware
index 4579fc003a..3a8659599d 100644
--- a/dietpi/func/dietpi-set_hardware
+++ b/dietpi/func/dietpi-set_hardware
@@ -1467,8 +1467,13 @@ Do you want to continue and disable the serial login console?'; then
 	Serial_Main(){
 
 		#-------------------------------------------------------------------------------------
+		#C1 on 3.x with Jessie, causes kernel hang.
+		if (( $G_HW_MODEL == 10 )); then
+		
+			echo 'Not supported'
+			
 		# Enable
-		if [[ $INPUT_DEVICE_VALUE == 'enable' ]]; then
+		elif [[ $INPUT_DEVICE_VALUE == 'enable' ]]; then
 
 			# Enable for specific Serial/UART device
 			if [[ $INPUT_ADDITIONAL ]]; then