diff --git a/kernel/Makefile b/kernel/Makefile
index 428af6a0..ce0c83ef 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -102,7 +102,7 @@ ccflags-y += -DEXPECTED_SIZE=$(KSU_EXPECTED_SIZE)
 ccflags-y += -DEXPECTED_HASH=\"$(KSU_EXPECTED_HASH)\"
 
 # SELinux 驱动程序检查
-ifeq ($(shell grep -q " current_sid(void)" $(srctree)/security/selinux/include/objsec.h; echo $$?),0)
+ifeq ($(shell grep -q "current_sid(void)" $(srctree)/security/selinux/include/objsec.h; echo $$?),0)
 ccflags-y += -DKSU_COMPAT_HAS_CURRENT_SID
 endif