diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index a6e44d6033d..ea387df02af 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -68,7 +68,7 @@ config RPMSG_UART
 
 config RPMSG_SERIALINIT
 	bool "Add dummy up_serialinit for UART rpmsg"
-	default !16550_UART && !CMSDK_UART && !MCU_SERIAL
+	default y if !16550_UART && !CMSDK_UART && !MCU_SERIAL
 	depends on RPMSG_UART
 
 #