diff --git a/libcpu/arm/s3c24x0/mmu.c b/libcpu/arm/s3c24x0/mmu.c
index 6ba6e7dce9614aec0311b75dcaa58b8574f0c10d..0cbac7f93428d5861c4154c57ae78a7d5149590e 100644
--- a/libcpu/arm/s3c24x0/mmu.c
+++ b/libcpu/arm/s3c24x0/mmu.c
@@ -44,7 +44,7 @@
 #ifdef __GNUC__
 void mmu_setttbase(register rt_uint32_t i)
 {
-	asm ("mcr p15, 0, %0, c2, c2, 0": :"r" (i));
+	asm ("mcr p15, 0, %0, c2, c0, 0": :"r" (i));
 }
 
 void mmu_set_domain(register rt_uint32_t i)
@@ -177,7 +177,7 @@ void mmu_setttbase(rt_uint32_t i)
 {
     __asm
     {
-        mcr p15, 0, i, c2, c2, 0
+        mcr p15, 0, i, c2, c0, 0
     }
 }