diff --git a/arch/mips/include/asm/mach-malta/kernel-entry-init.h b/arch/mips/include/asm/mach-malta/kernel-entry-init.h
index 0cf8622db27f4689b9e7bb076b422d67a0c28cf9..ab03eb3fadac2e8959734d638050fee61678e9c9 100644
--- a/arch/mips/include/asm/mach-malta/kernel-entry-init.h
+++ b/arch/mips/include/asm/mach-malta/kernel-entry-init.h
@@ -56,7 +56,7 @@
 		(0 << MIPS_SEGCFG_PA_SHIFT) |				\
 		(1 << MIPS_SEGCFG_EU_SHIFT)) << 16)
 	or	t0, t2
-	mtc0	t0, $5, 2
+	mtc0	t0, CP0_SEGCTL0
 
 	/* SegCtl1 */
 	li      t0, ((MIPS_SEGCFG_MUSUK << MIPS_SEGCFG_AM_SHIFT) |	\
@@ -67,7 +67,7 @@
 		(0 << MIPS_SEGCFG_PA_SHIFT) |				\
 		(1 << MIPS_SEGCFG_EU_SHIFT)) << 16)
 	ins	t0, t1, 16, 3
-	mtc0	t0, $5, 3
+	mtc0	t0, CP0_SEGCTL1
 
 	/* SegCtl2 */
 	li	t0, ((MIPS_SEGCFG_MUSUK << MIPS_SEGCFG_AM_SHIFT) |	\
@@ -77,7 +77,7 @@
 		(4 << MIPS_SEGCFG_PA_SHIFT) |				\
 		(1 << MIPS_SEGCFG_EU_SHIFT)) << 16)
 	or	t0, t2
-	mtc0	t0, $5, 4
+	mtc0	t0, CP0_SEGCTL2
 
 	jal	mips_ihb
 	mfc0    t0, $16, 5
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 25d01577d0b564943f282960b67751e5bf84636a..8471905f92881a45f3ae81ca6c88f87ff6aa1ab6 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -48,6 +48,9 @@
 #define CP0_CONF $3
 #define CP0_CONTEXT $4
 #define CP0_PAGEMASK $5
+#define CP0_SEGCTL0 $5, 2
+#define CP0_SEGCTL1 $5, 3
+#define CP0_SEGCTL2 $5, 4
 #define CP0_WIRED $6
 #define CP0_INFO $7
 #define CP0_HWRENA $7, 0