diff --git a/arch/arm64/configs/microdroid.fragment b/arch/arm64/configs/microdroid.fragment
index 7e56527622fb..a9752c9b6371 100644
--- a/arch/arm64/configs/microdroid.fragment
+++ b/arch/arm64/configs/microdroid.fragment
@@ -3,3 +3,20 @@ CONFIG_VIRTIO_BLK=y
 CONFIG_VIRTIO_CONSOLE=y
 CONFIG_VIRTIO_PCI=y
 CONFIG_VIRTIO_VSOCKETS=y
+
+# Remove unnecessary serial devices
+# CONFIG_SERIAL_8250_16550A_VARIANT is not set
+# CONFIG_SERIAL_8250_DMA is not set
+# CONFIG_SERIAL_8250_PCI is not set
+# CONFIG_SERIAL_8250_FSL is not set
+# CONFIG_SERIAL_8250_DW is not set
+# CONFIG_SERIAL_AMBA_PL011 is not set
+# CONFIG_SERIAL_AMBA_PL011_CONSOLE is not set
+# CONFIG_SERIAL_SAMSUNG is not set
+# CONFIG_SERIAL_SAMSUNG_CONSOLE is not set
+# CONFIG_QCOM_GENI is not set
+# CONFIG_QCOM_GENI_CONSOLE is not set
+# CONFIG_SERIAL_SPRD is not set
+# CONFIG_SERIAL_SPRD_CONSOLE is not set
+# CONFIG_HVC_DCC=y is not set
+# CONFIG_SERIAL_DEV_BUS is not set
diff --git a/arch/x86/configs/microdroid.fragment b/arch/x86/configs/microdroid.fragment
index c54ef888fbc1..25e6b1a55aec 100644
--- a/arch/x86/configs/microdroid.fragment
+++ b/arch/x86/configs/microdroid.fragment
@@ -3,3 +3,12 @@ CONFIG_VIRTIO_BLK=y
 CONFIG_VIRTIO_CONSOLE=y
 CONFIG_VIRTIO_PCI=y
 CONFIG_VIRTIO_VSOCKETS=y
+
+# Remove unnecessary serial devices
+# CONFIG_SERIAL_8250_16550A_VARIANT is not set
+# CONFIG_SERIAL_8250_DMA is not set
+# CONFIG_SERIAL_8250_PCI is not set
+# CONFIG_SERIAL_8250_FSL is not set
+# CONFIG_SERIAL_SAMSUNG is not set
+# CONFIG_SERIAL_SAMSUNG_CONSOLE is not set
+# CONFIG_SERIAL_DEV_BUS is not set