diff --git a/arch/x86/scc/iRCCE_mailbox.c b/arch/x86/scc/iRCCE_mailbox.c
index 958194a8..1ca67c1f 100644
--- a/arch/x86/scc/iRCCE_mailbox.c
+++ b/arch/x86/scc/iRCCE_mailbox.c
@@ -159,7 +159,7 @@ static int iRCCE_mail_fetch(
  * write out the data.
  */
 //------------------------------------------------------------------------------
-iRCCE_MAIL_HEADER dummy_header = {0, 0, 0, NULL, 0, 0, 0, {[0 ... iRCCE_MAIL_HEADER_PAYLOAD-1] = 0} }; 
+static iRCCE_MAIL_HEADER dummy_header = {0, 0, 0, NULL, 0, 0, 0, {[0 ... iRCCE_MAIL_HEADER_PAYLOAD-1] = 0} }; 
 
 
 static int iRCCE_mailbox_check(void) {