diff --git a/kernel/Makefile b/kernel/Makefile
index f04707e1..a07033c3 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -13,16 +13,11 @@ obj-y += kernel_compat.o
 
 obj-y += selinux/
 
+ifeq ($(shell test -d $(srctree)/$(src)/../.git; echo $$?),0)
 # We must use the absolute path to git, otherwise the build will fail if git is not in the PATH
 KSU_GIT_VERSION := $(shell cd $(srctree)/$(src);/usr/bin/git rev-list --count HEAD)
-ifeq ($(KSU_GIT_VERSION),)
-$(error Get git version failed, please make sure git is installed in /usr/bin/git)
-endif
-ifeq ($(shell test $(KSU_GIT_VERSION) -gt 10000; echo $$?),0)
-$(error The way you configure KernelSU is wrong, please use submodule and make sure it is a single git repo)
-endif
-
 ccflags-y += -DKSU_GIT_VERSION=$(KSU_GIT_VERSION)
+endif
 
 ifndef EXPECTED_SIZE
 EXPECTED_SIZE := 0x033b
diff --git a/kernel/ksu.h b/kernel/ksu.h
index 3c2d0dd1..f22c3c95 100644
--- a/kernel/ksu.h
+++ b/kernel/ksu.h
@@ -4,7 +4,8 @@
 #include "linux/workqueue.h"
 
 #ifndef KSU_GIT_VERSION
-#error "KSU_GIT_VERSION not defined! Please check Makefile."
+#warning "KSU_GIT_VERSION not defined! It is better to make KernelSU a git submodule!"
+#define KERNEL_SU_VERSION (16)
 #else
 #define KERNEL_SU_VERSION (10000 + KSU_GIT_VERSION + 200) // major * 10000 + git version + 200 for historical reasons
 #endif