diff --git a/sys/arm/arm/locore-v6.S b/sys/arm/arm/locore-v6.S
index eda60146dd5b..b93af2c4b6b5 100644
--- a/sys/arm/arm/locore-v6.S
+++ b/sys/arm/arm/locore-v6.S
@@ -132,9 +132,9 @@ ASENTRY_NP(_start)
 	bic	r7, #CPU_CONTROL_DC_ENABLE
 	bic	r7, #CPU_CONTROL_MMU_ENABLE
 	bic	r7, #CPU_CONTROL_IC_ENABLE
-	bic	r7, #CPU_CONTROL_UNAL_ENABLE
 	bic	r7, #CPU_CONTROL_BPRD_ENABLE
 	bic	r7, #CPU_CONTROL_SW_ENABLE
+	orr	r7, #CPU_CONTROL_UNAL_ENABLE
 	orr	r7, #CPU_CONTROL_AFLT_ENABLE
 	orr	r7, #CPU_CONTROL_VECRELOC
 	mcr	CP15_SCTLR(r7)
@@ -456,9 +456,9 @@ ASENTRY_NP(mpentry)
 	bic	r0, #CPU_CONTROL_MMU_ENABLE
 	bic	r0, #CPU_CONTROL_DC_ENABLE
 	bic	r0, #CPU_CONTROL_IC_ENABLE
-	bic	r0, #CPU_CONTROL_UNAL_ENABLE
 	bic	r0, #CPU_CONTROL_BPRD_ENABLE
 	bic	r0, #CPU_CONTROL_SW_ENABLE
+	orr	r0, #CPU_CONTROL_UNAL_ENABLE
 	orr	r0, #CPU_CONTROL_AFLT_ENABLE
 	orr	r0, #CPU_CONTROL_VECRELOC
 	mcr	CP15_SCTLR(r0)