diff --git a/parse.c b/parse.c
index b43d683..5b2b2fa 100644
--- a/parse.c
+++ b/parse.c
@@ -414,6 +414,7 @@ static struct init_keyword {
 	{ "__builtin_va_list", NS_TYPEDEF, .type = &ptr_ctype, .op = &spec_op },
 	{ "__builtin_ms_va_list", NS_TYPEDEF, .type = &ptr_ctype, .op = &spec_op },
 	{ "__int128_t",	NS_TYPEDEF, .type = &lllong_ctype, .op = &spec_op },
+	{ "__int128",	NS_TYPEDEF, .type = &lllong_ctype, .op = &spec_op },
 	{ "__uint128_t",NS_TYPEDEF, .type = &ulllong_ctype, .op = &spec_op },
 
 	/* Extended types */