diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 961e3fb..93348c0 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -443,6 +443,7 @@
 	int "UART input clock"
 	depends on DEBUG_UART
 	default 0 if DEBUG_UART_SANDBOX
+	default 0 if DEBUG_MVEBU_A3700_UART
 	help
 	  The UART input clock determines the speed of the internal UART
 	  circuitry. The baud rate is derived from this by dividing the input