--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,5 @@
 obj-m = xt_FULLCONENAT.o
 CFLAGS_xt_FULLCONENAT.o := ${CFLAGS}
-KVERSION = $(shell uname -r)
 all:
 	make -C /lib/modules/$(KVERSION)/build M=$(PWD) modules
 clean: