diff --git a/package/uboot-tools/uboot-tools.mk b/package/uboot-tools/uboot-tools.mk
index a87956d028..81f60963ec 100644
--- a/package/uboot-tools/uboot-tools.mk
+++ b/package/uboot-tools/uboot-tools.mk
@@ -206,15 +206,15 @@ $(eval $(host-generic-package))
 
 MKIMAGE = $(HOST_DIR)/bin/mkimage
 
-# mkimage supports arm blackfin m68k microblaze mips mips64 nios2 powerpc ppc sh sparc sparc64 x86
+# mkimage supports alpha arc arm arm64 blackfin ia64 invalid m68k microblaze mips mips64 nds32 nios2 or1k powerpc riscv s390 sandbox sh sparc sparc64 x86 x86_64 xtensa
 # KERNEL_ARCH can be arm64 arc arm blackfin m68k microblaze mips nios2 powerpc sh sparc i386 x86_64 xtensa
-# For arm64, arc, xtensa we'll just keep KERNEL_ARCH
-# For mips64, we'll just keep mips
-# For i386 and x86_64, we need to convert
-ifeq ($(KERNEL_ARCH),x86_64)
-MKIMAGE_ARCH = x86
-else ifeq ($(KERNEL_ARCH),i386)
+# For i386, we need to convert
+# For openrisc, we need to convert
+# For others, we'll just keep KERNEL_ARCH
+ifeq ($(KERNEL_ARCH),i386)
 MKIMAGE_ARCH = x86
+else ifeq ($(KERNEL_ARCH),openrisc)
+MKIMAGE_ARCH = or1k
 else
 MKIMAGE_ARCH = $(KERNEL_ARCH)
 endif