diff --git a/drivers/tty/serial/efm32-uart.c b/drivers/tty/serial/efm32-uart.c
index e029907cf4308939bb157607cbe90ce18aad5146..868dbfb9f89352577335a20dd654d745e4ea9b79 100644
--- a/drivers/tty/serial/efm32-uart.c
+++ b/drivers/tty/serial/efm32-uart.c
@@ -788,7 +788,7 @@ static int efm32_uart_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct of_device_id efm32_uart_dt_ids[] = {
+static const struct of_device_id efm32_uart_dt_ids[] = {
 	{
 		.compatible = "efm32,uart",
 	}, {