diff --git a/firmware/target/arm/s3c2440/crt0.S b/firmware/target/arm/s3c2440/crt0.S
index aa0f598b2d..a61f2a3ce2 100644
--- a/firmware/target/arm/s3c2440/crt0.S
+++ b/firmware/target/arm/s3c2440/crt0.S
@@ -493,7 +493,7 @@ donecopy:
     /* Setup the MMU, start by disabling */
 
     mrc     p15, 0, r0, c1, c0, 0  
-    bic     r0, r0, #0x41          /* disable mmu and dcache */
+    bic     r0, r0, #0x5           /* disable mmu and dcache */
     bic     r0, r0, #0x1000        /* disable icache */
     mcr     p15, 0, r0, c1, c0, 0