diff --git a/fpga/fpgactl b/fpga/fpgactl
index f208480..78b9c1b 100755
--- a/fpga/fpgactl
+++ b/fpga/fpgactl
@@ -379,10 +379,10 @@ slot=
 pcidir=
 qdmadev=
 
-bootloader_addr="${FPGA_BOOTLOADER_ADDR:-0x80000000}"
-kernel_addr="${FPGA_KERNEL_ADDR:-0x84000000}"
-initrd_addr="${FPGA_INITRD_ADDR:-0x8c300000}"
-rootfs_addr="${FPGA_ROOTFS_ADDR:-0x140000000}"
+bootloader_addr="${FPGACTL_BOOTLOADER_ADDR:-0x80000000}"
+kernel_addr="${FPGACTL_KERNEL_ADDR:-0x84000000}"
+initrd_addr="${FPGACTL_INITRD_ADDR:-0x8c300000}"
+rootfs_addr="${FPGACTL_ROOTFS_ADDR:-0x140000000}"
 
 hostname="${hostname:-$(hostname)}"
 echo "hostname=$hostname"