diff --git a/riscv_isac/InstructionObject.py b/riscv_isac/InstructionObject.py
index 9396e6a..04120a3 100644
--- a/riscv_isac/InstructionObject.py
+++ b/riscv_isac/InstructionObject.py
@@ -25,7 +25,7 @@
         'aes32esmi', 'aes32esi', 'aes32dsmi', 'aes32dsi','bclr','bext','binv',\
         'bset','zext.h','sext.h','sext.b','zext.b','zext.w','minu','maxu','orc.b','add.uw','sh1add.uw',\
         'sh2add.uw','sh3add.uw','slli.uw','clz','clzw','ctz','ctzw','cpop','cpopw','rev8',\
-        'bclri','bexti','binvi','bseti','fcvt.d.wu','fcvt.s.wu','fcvt.d.lu','fcvt.s.lu','c.flwsp',\
+        'bclri','bexti','binvi','bseti','fcvt.d.wu','fcvt.s.wu','fcvt.d.lu','fcvt.s.lu','c.flwsp','c.fldsp','c.flw','c.fld',\
         'c.not', 'c.sext.b','c.sext.h','c.zext.b','c.zext.h','c.zext.w','sc.w','lr.w','sc.d','lr.d']
 unsgn_rs2 = ['bgeu', 'bltu', 'sltiu', 'sltu', 'sll', 'srl', 'sra','mulhu',\
         'mulhsu','divu','remu','divuw','remuw','aes64ds','aes64dsm','aes64es',\