diff --git a/arch/x86/scc/iRCCE_mailbox.c b/arch/x86/scc/iRCCE_mailbox.c
index b311970d..d63e6c4b 100644
--- a/arch/x86/scc/iRCCE_mailbox.c
+++ b/arch/x86/scc/iRCCE_mailbox.c
@@ -170,7 +170,7 @@ static int iRCCE_mail_fetch(
 iRCCE_MAIL_HEADER dummy_header = {0, 0, 0, NULL, 0, 0, 0, {[0 ... iRCCE_MAIL_HEADER_PAYLOAD-1] = 0} }; 
 
 
-static int iRCCE_mailbox_check() {
+static int iRCCE_mailbox_check(void) {
 	int i,j;
 	uint32_t flags;