diff --git a/x1/injector/disable_mmu.S b/x1/injector/disable_mmu.S
index 4ca82ad..00ee28e 100644
--- a/x1/injector/disable_mmu.S
+++ b/x1/injector/disable_mmu.S
@@ -3,9 +3,18 @@
     .global _start
 
 _start:
-    mov r9, #0
     ldr r0, =0x67800000
 
+    cpsid if
+
+    mrc p15, 0, r8, c14, c2, 1
+    bic r8, r8, #1
+    mcr p15, 0, r8, c14, c2, 1
+    mrc p15, 0, r8, c14, c3, 1
+    bic r8, r8, #1
+    mcr p15, 0, r8, c14, c3, 1
+
+    mov r9, #0
     mrc p15, 0, r10, c1, c0, 0
     @bic r10, r10, #5  @ disable MMU and dcache
     bic r10, r10, #1  @ disable MMU