diff --git a/include/arch/aarch64/arch_helpers.h b/include/arch/aarch64/arch_helpers.h
index 6d115c7..720f6f3 100644
--- a/include/arch/aarch64/arch_helpers.h
+++ b/include/arch/aarch64/arch_helpers.h
@@ -590,6 +590,9 @@
 DEFINE_RENAME_SYSREG_RW_FUNCS(hfgrtr_el2, HFGRTR_EL2)
 DEFINE_RENAME_SYSREG_RW_FUNCS(hfgwtr_el2, HFGWTR_EL2)
 
+/* ARMv8.6 FEAT_ECV Register */
+DEFINE_RENAME_SYSREG_RW_FUNCS(cntpoff_el2, CNTPOFF_EL2)
+
 /* FEAT_HCX Register */
 DEFINE_RENAME_SYSREG_RW_FUNCS(hcrx_el2, HCRX_EL2)