diff --git a/drivers/amlogic/media/vout/lcd/lcd_extern/lcd_extern.c b/drivers/amlogic/media/vout/lcd/lcd_extern/lcd_extern.c
index f84a616d992a..0de4274ad9fc 100644
--- a/drivers/amlogic/media/vout/lcd/lcd_extern/lcd_extern.c
+++ b/drivers/amlogic/media/vout/lcd/lcd_extern/lcd_extern.c
@@ -86,6 +86,11 @@ static struct lcd_extern_config_s lcd_extern_config = {
 
 struct aml_lcd_extern_driver_s *aml_lcd_extern_get_driver(int index)
 {
+	if (lcd_ext_driver == NULL) {
+		EXTERR("invalid driver\n");
+		return NULL;
+	}
+
 	if (index >= LCD_EXTERN_INDEX_INVALID) {
 		EXTERR("invalid driver index: %d\n", index);
 		return NULL;