diff --git a/arch/arm/mach-omap1/mailbox.c b/arch/arm/mach-omap1/mailbox.c
index 1a85a421007f98dcb84be0db0dcbdf4065cadfdd..12d68801450f70f50166ade1b51067a1def71dad 100644
--- a/arch/arm/mach-omap1/mailbox.c
+++ b/arch/arm/mach-omap1/mailbox.c
@@ -133,13 +133,13 @@ static struct omap_mbox1_priv omap1_mbox_dsp_priv = {
 	},
 };
 
-struct omap_mbox mbox_dsp_info = {
+static struct omap_mbox mbox_dsp_info = {
 	.name	= "dsp",
 	.ops	= &omap1_mbox_ops,
 	.priv	= &omap1_mbox_dsp_priv,
 };
 
-struct omap_mbox *omap1_mboxes[] = { &mbox_dsp_info, NULL };
+static struct omap_mbox *omap1_mboxes[] = { &mbox_dsp_info, NULL };
 
 static int __devinit omap1_mbox_probe(struct platform_device *pdev)
 {