diff --git a/gas/doc/h8.m4 b/gas/doc/h8.m4
index 6d55ce8534..a6ea960e20 100644
--- a/gas/doc/h8.m4
+++ b/gas/doc/h8.m4
@@ -1,5 +1,6 @@
 _divert__(-1)
 _define__(<_H8__>,<1>)
+_define__(<_AS__>,<as83>)
 _define__(<_GENERIC__>,<0>)
 _define__(<_HOST__>,<H8/300>)
 _define__(<_MACH_DEP__>,<H8/300-Dependent>)