diff --git a/sys/arm/arm/locore-v6.S b/sys/arm/arm/locore-v6.S
index 7d5ba9704ae..cddcdab787c 100644
--- a/sys/arm/arm/locore-v6.S
+++ b/sys/arm/arm/locore-v6.S
@@ -240,7 +240,7 @@ ASENTRY_NP(init_mmu)
 	 *  - All is set to uncacheable memory
 	 */
 	ldr	r0, =0xAAAAA
-	mrc	CP15_PRRR(r0)
+	mcr	CP15_PRRR(r0)
 	mov	r0, #0
 	mcr	CP15_NMRR(r0)
 #endif