diff --git a/xen/include/xen/libfdt/fdt.h b/xen/include/xen/libfdt/fdt.h
index 57fe566306..c6e4d7838d 100644
--- a/xen/include/xen/libfdt/fdt.h
+++ b/xen/include/xen/libfdt/fdt.h
@@ -45,7 +45,7 @@ struct fdt_property {
 	char data[0];
 };
 
-#endif /* !__ASSEMBLY */
+#endif /* !__ASSEMBLER__ */
 
 #define FDT_MAGIC	0xd00dfeed	/* 4: version, 4: total size */
 #define FDT_TAGSIZE	sizeof(fdt32_t)