diff --git a/include/xen/interface/io/protocols.h b/include/xen/interface/io/protocols.h
index 0eafaf254fff..056744b4b05e 100644
--- a/include/xen/interface/io/protocols.h
+++ b/include/xen/interface/io/protocols.h
@@ -15,7 +15,7 @@
 # define XEN_IO_PROTO_ABI_NATIVE XEN_IO_PROTO_ABI_IA64
 #elif defined(__powerpc64__)
 # define XEN_IO_PROTO_ABI_NATIVE XEN_IO_PROTO_ABI_POWERPC64
-#elif defined(__arm__)
+#elif defined(__arm__) || defined(__aarch64__)
 # define XEN_IO_PROTO_ABI_NATIVE XEN_IO_PROTO_ABI_ARM
 #else
 # error arch fixup needed here