diff --git a/lib/cpus/aarch64/neoverse_n1.S b/lib/cpus/aarch64/neoverse_n1.S
index b143a2e..31e7a3a 100644
--- a/lib/cpus/aarch64/neoverse_n1.S
+++ b/lib/cpus/aarch64/neoverse_n1.S
@@ -43,6 +43,7 @@
 	msr	CPUPMR_EL3, x0
 	ldr	x0, =0x800200071
 	msr	CPUPCR_EL3, x0
+	isb
 1:
 	ret	x17
 endfunc errata_n1_1043202_wa