diff --git a/configs/slimbootloader_defconfig b/configs/slimbootloader_defconfig
index b6b9f88..f5d16f6 100644
--- a/configs/slimbootloader_defconfig
+++ b/configs/slimbootloader_defconfig
@@ -31,5 +31,6 @@
 CONFIG_LBA48=y
 CONFIG_SYS_64BIT_LBA=y
 # CONFIG_PCI_PNP is not set
+CONFIG_SYS_NS16550_PORT_MAPPED=y
 CONFIG_CONSOLE_SCROLL_LINES=5
 # CONFIG_GZIP is not set