diff --git a/riscv/v_ext_macros.h b/riscv/v_ext_macros.h
index a0d8322612..e00b0c0a3e 100644
--- a/riscv/v_ext_macros.h
+++ b/riscv/v_ext_macros.h
@@ -341,12 +341,12 @@ static inline bool is_aligned(const unsigned val, const unsigned pos)
   type_usew_t<x>::type vs2 = P.VU.elt<type_usew_t<x>::type>(rs2_num, i);
 
 #define VV_PARAMS(x) \
-  type_sew_t<x>::type &vd = P.VU.elt<type_sew_t<x>::type>(rd_num, i, true); \
+  type_sew_t<x>::type UNUSED &vd = P.VU.elt<type_sew_t<x>::type>(rd_num, i, true); \
   type_sew_t<x>::type vs1 = P.VU.elt<type_sew_t<x>::type>(rs1_num, i); \
   type_sew_t<x>::type UNUSED vs2 = P.VU.elt<type_sew_t<x>::type>(rs2_num, i);
 
 #define VX_PARAMS(x) \
-  type_sew_t<x>::type &vd = P.VU.elt<type_sew_t<x>::type>(rd_num, i, true); \
+  type_sew_t<x>::type UNUSED &vd = P.VU.elt<type_sew_t<x>::type>(rd_num, i, true); \
   type_sew_t<x>::type rs1 = (type_sew_t<x>::type)RS1; \
   type_sew_t<x>::type UNUSED vs2 = P.VU.elt<type_sew_t<x>::type>(rs2_num, i);