diff --git a/riscv/isa_parser.h b/riscv/isa_parser.h
index fac41864..a84b6fe8 100644
--- a/riscv/isa_parser.h
+++ b/riscv/isa_parser.h
@@ -76,6 +76,7 @@ typedef enum {
   EXT_XZBT,
   EXT_SSTC,
   EXT_ZACAS,
+  EXT_ZABHA,
   EXT_INTERNAL_ZFH_MOVE,
   EXT_SMCSRIND,
   EXT_SSCSRIND,