diff --git a/meta/conf/machine/qemuarm.conf b/meta/conf/machine/qemuarm.conf
index 44e73a3070..3364dcf042 100644
--- a/meta/conf/machine/qemuarm.conf
+++ b/meta/conf/machine/qemuarm.conf
@@ -7,6 +7,8 @@ require conf/machine/include/qemu.inc
 
 KERNEL_IMAGETYPE = "zImage"
 
+UBOOT_MACHINE ?= "qemu_arm_defconfig"
+
 SERIAL_CONSOLES ?= "115200;ttyAMA0 115200;hvc0"
 SERIAL_CONSOLES_CHECK = "${SERIAL_CONSOLES}"
 
diff --git a/meta/conf/machine/qemuarm64.conf b/meta/conf/machine/qemuarm64.conf
index d0d6f38e42..fdd464d708 100644
--- a/meta/conf/machine/qemuarm64.conf
+++ b/meta/conf/machine/qemuarm64.conf
@@ -7,6 +7,8 @@ require conf/machine/include/qemu.inc
 
 KERNEL_IMAGETYPE = "Image"
 
+UBOOT_MACHINE ?= "qemu_arm64_defconfig"
+
 SERIAL_CONSOLES ?= "115200;ttyAMA0 115200;hvc0"
 SERIAL_CONSOLES_CHECK = "${SERIAL_CONSOLES}"