diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index f086195f644c..752dbf4e0e50 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -36,7 +36,7 @@
  * necessary invalidation by clearing out the 'ctx_id' which
  * forces a TLB flush when the context is loaded.
  */
-void clear_asid_other(void)
+static void clear_asid_other(void)
 {
 	u16 asid;