diff --git a/qemu/target/mips/translate.c b/qemu/target/mips/translate.c
index 7d2e233b..8cf6e41a 100644
--- a/qemu/target/mips/translate.c
+++ b/qemu/target/mips/translate.c
@@ -24137,6 +24137,13 @@ static void decode_opc_special(CPUMIPSState *env, DisasContext *ctx)
 #define MXU_EPTN2_SA    2
 #define MXU_EPTN2_SS    3
 
+/* MXU operand getting pattern 'optn2' */
+#define MXU_OPTN2_WW    0
+#define MXU_OPTN2_LW    1
+#define MXU_OPTN2_HW    2
+#define MXU_OPTN2_XW    3
+
+
 /*
  *
  * Decode MXU pool00