diff --git a/init/main.c b/init/main.c
index 59248717c925..48c87f47a444 100644
--- a/init/main.c
+++ b/init/main.c
@@ -335,7 +335,7 @@ static char * __init xbc_make_cmdline(const char *key)
 	return new_cmdline;
 }
 
-u32 boot_config_checksum(unsigned char *p, u32 size)
+static u32 boot_config_checksum(unsigned char *p, u32 size)
 {
 	u32 ret = 0;