diff --git a/arch/arm/xen/mm.c b/arch/arm/xen/mm.c
index 6feb6b78b13c..3c7645d7b9b4 100644
--- a/arch/arm/xen/mm.c
+++ b/arch/arm/xen/mm.c
@@ -134,7 +134,7 @@ void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order)
 	return;
 }
 
-int __init xen_mm_init(void)
+static int __init xen_mm_init(void)
 {
 	struct gnttab_cache_flush cflush;
 	if (!xen_initial_domain())