diff --git a/dynasm/dasm_s390x.lua b/dynasm/dasm_s390x.lua
index dc83c9f9..bff135b3 100644
--- a/dynasm/dasm_s390x.lua
+++ b/dynasm/dasm_s390x.lua
@@ -1251,8 +1251,12 @@ map_op = {
   -- RIE-e
   brxhg_3 =	"ec0000000044RIE-e",
   -- SI
+  cli_2 =	"000095000000SI",
+  mvi_2 =	"000092000000SI",
   ni_2 =	"000094000000SI",
   tm_2 =	"000091000000SI",
+  xi_2 =	"000097000000SI",
+  oi_2 =	"000096000000SI",
   -- SIY
   tmy_2 =	"eb0000000051SIY",
   -- RXF