diff --git a/arch/mips/include/asm/mips-boards/generic.h b/arch/mips/include/asm/mips-boards/generic.h
index 7f0b034dd9a5fa19d766a3300b4ff3e1dd4ab70f..c0da1a881e3da030170fa010189d35ca33e9324e 100644
--- a/arch/mips/include/asm/mips-boards/generic.h
+++ b/arch/mips/include/asm/mips-boards/generic.h
@@ -71,8 +71,6 @@
 
 #define MIPS_REVISION_CORID (((*(volatile u32 *)ioremap(MIPS_REVISION_REG, 4)) >> 10) & 0x3f)
 
-extern int mips_revision_corid;
-
 #define MIPS_REVISION_SCON_OTHER	   0
 #define MIPS_REVISION_SCON_SOCITSC	   1
 #define MIPS_REVISION_SCON_SOCITSCP	   2
diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c
index 4832af2516680d4ac653ac31017f6a6960bab0d6..475038a141a65038ee34792a6d06395010004a93 100644
--- a/arch/mips/mti-malta/malta-init.c
+++ b/arch/mips/mti-malta/malta-init.c
@@ -48,7 +48,7 @@ int *_prom_argv, *_prom_envp;
 
 int init_debug = 0;
 
-int mips_revision_corid;
+static int mips_revision_corid;
 int mips_revision_sconid;
 
 /* Bonito64 system controller register base. */