diff --git a/linux/linux.mk b/linux/linux.mk
index 1d3d8fffa6..7e443fb227 100644
--- a/linux/linux.mk
+++ b/linux/linux.mk
@@ -343,6 +343,10 @@ LINUX_KCONFIG_DEFCONFIG = $(call qstrip,$(BR2_LINUX_KERNEL_DEFCONFIG))_defconfig
 else ifeq ($(BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG),y)
 ifeq ($(BR2_powerpc64le),y)
 LINUX_KCONFIG_DEFCONFIG = ppc64le_defconfig
+else ifeq ($(BR2_powerpc64),y)
+LINUX_KCONFIG_DEFCONFIG = ppc64_defconfig
+else ifeq ($(BR2_powerpc),y)
+LINUX_KCONFIG_DEFCONFIG = ppc_defconfig
 else
 LINUX_KCONFIG_DEFCONFIG = defconfig
 endif