diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c
index 4832af2..475038a 100644
--- a/arch/mips/mti-malta/malta-init.c
+++ b/arch/mips/mti-malta/malta-init.c
@@ -48,7 +48,7 @@
 
 int init_debug = 0;
 
-int mips_revision_corid;
+static int mips_revision_corid;
 int mips_revision_sconid;
 
 /* Bonito64 system controller register base. */