diff --git a/Makefile b/Makefile
index 2938c76..8ef0567 100755
--- a/Makefile
+++ b/Makefile
@@ -403,7 +403,7 @@ EXTRA_CFLAGS += -DRTW_USE_CFG80211_STA_EVENT
 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ | sed -e s/ppc/powerpc/ | sed -e s/armv.l/arm/)
 ARCH ?= $(SUBARCH)
 CROSS_COMPILE ?=
-KVER  := $(shell uname -r)
+KVER  ?= $(if $(KERNELRELEASE),$(KERNELRELEASE),$(shell uname -r))
 KSRC := /lib/modules/$(KVER)/build
 MODDESTDIR := /lib/modules/$(KVER)/kernel/drivers/net/wireless/
 INSTALL_PREFIX :=