diff --git a/Makefile b/Makefile
index 4baac3d..9d8dbd6 100755
--- a/Makefile
+++ b/Makefile
@@ -682,7 +682,7 @@ EXTRA_CFLAGS += -DDM_ODM_SUPPORT_TYPE=0x04
 ifeq ($(CONFIG_PLATFORM_I386_PC), y)
 EXTRA_CFLAGS += -DCONFIG_LITTLE_ENDIAN
 EXTRA_CFLAGS += -DCONFIG_IOCTL_CFG80211 -DRTW_USE_CFG80211_STA_EVENT
-SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ | sed -e s/aarch64/arm64/ )
+SUBARCH := $(shell uname -m | sed -e "s/i.86/i386/; s/ppc/powerpc/; s/armv.l/arm/; s/aarch64/arm64/;")
 ARCH ?= $(SUBARCH)
 CROSS_COMPILE ?=
 KVER := $(shell uname -r)