diff --git a/Makefile b/Makefile
index 063e647..032fa73 100644
--- a/Makefile
+++ b/Makefile
@@ -1070,7 +1070,7 @@ EXTRA_CFLAGS += -DCONFIG_IOCTL_CFG80211 -DRTW_USE_CFG80211_STA_EVENT
 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/)
 ARCH ?= $(SUBARCH)
 CROSS_COMPILE ?=
-KVER  := $(shell uname -r)
+KVER  ?= $(shell uname -r)
 KSRC := /lib/modules/$(KVER)/build
 MODDESTDIR := /lib/modules/$(KVER)/kernel/drivers/net/wireless/
 INSTALL_PREFIX :=