diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S
index d9610a5..e1461f2 100644
--- a/arch/arm/cpu/armv8/start.S
+++ b/arch/arm/cpu/armv8/start.S
@@ -192,6 +192,7 @@
 	br	x0			/* branch to the given address */
 #endif /* CONFIG_ARMV8_MULTIENTRY */
 master_cpu:
+	msr	SPSel, #1		/* make sure we use SP_ELx */
 	bl	_main
 
 /*-----------------------------------------------------------------------*/