diff --git a/conf/machine/raspberrypi3-64.conf b/conf/machine/raspberrypi3-64.conf
index 65e3302..0c6526a 100644
--- a/conf/machine/raspberrypi3-64.conf
+++ b/conf/machine/raspberrypi3-64.conf
@@ -22,7 +22,7 @@ RPI_KERNEL_DEVICETREE = " \
 
 SERIAL_CONSOLES ?= "115200;ttyS0"
 
-UBOOT_MACHINE = "rpi_3_config"
+UBOOT_MACHINE = "rpi_arm64_config"
 
 # When u-boot is enabled we need to use the "Image" format and the "booti"
 # command to load the kernel
diff --git a/conf/machine/raspberrypi4-64.conf b/conf/machine/raspberrypi4-64.conf
index b4d442e..7c9792c 100644
--- a/conf/machine/raspberrypi4-64.conf
+++ b/conf/machine/raspberrypi4-64.conf
@@ -20,7 +20,7 @@ RPI_KERNEL_DEVICETREE = " \
 SDIMG_KERNELIMAGE ?= "kernel8.img"
 SERIAL_CONSOLES ?= "115200;ttyS0"
 
-UBOOT_MACHINE = "rpi_4_config"
+UBOOT_MACHINE = "rpi_arm64_config"
 
 VC4DTBO ?= "vc4-fkms-v3d"