diff --git a/kmod/patch/Makefile b/kmod/patch/Makefile
index 7332774..85f0850 100644
--- a/kmod/patch/Makefile
+++ b/kmod/patch/Makefile
@@ -1,5 +1,5 @@
 KPATCH_BUILD ?= /lib/modules/$(shell uname -r)/build
-KPATCH_MAKE = $(MAKE) -C $(KPATCH_BUILD) M=$(PWD)
+KPATCH_MAKE = $(MAKE) -C $(KPATCH_BUILD) M=$(PWD) CFLAGS_MODULE='$(CFLAGS_MODULE)'
 LDFLAGS += $(KPATCH_LDFLAGS)
 
 # ppc64le kernel modules are expected to compile with the
@@ -7,7 +7,7 @@ LDFLAGS += $(KPATCH_LDFLAGS)
 # instead of a 32-bit offset from the TOC pointer.
 PROCESSOR = $(shell uname -m)
 ifeq ($(PROCESSOR), ppc64le)
-KBUILD_CFLAGS_MODULE += -mcmodel=large
+CFLAGS_MODULE += -mcmodel=large
 endif
 
 obj-m += $(KPATCH_NAME).o
diff --git a/kpatch-build/kpatch-build b/kpatch-build/kpatch-build
index 186b725..99bf601 100755
--- a/kpatch-build/kpatch-build
+++ b/kpatch-build/kpatch-build
@@ -839,7 +839,7 @@ if grep -q "CONFIG_LIVEPATCH=y" "$CONFIGFILE" && (kernel_is_rhel || kernel_versi
 	if [[  "$KLP_REPLACE" -eq 1 ]] ; then
 		support_klp_replace || die "The kernel doesn't support klp replace"
 	else
-		export KBUILD_CFLAGS_MODULE="$KBUILD_CFLAGS_MODULE -DKLP_REPLACE_ENABLE=false"
+		export CFLAGS_MODULE="$CFLAGS_MODULE -DKLP_REPLACE_ENABLE=false"
 	fi
 else
 	# No support for livepatch in the kernel. Kpatch core module is needed.