diff --git a/src/Neo.Compiler.MSIL/MSIL/Converter.cs b/src/Neo.Compiler.MSIL/MSIL/Converter.cs
index 9d443a7c6..c67b97dc4 100644
--- a/src/Neo.Compiler.MSIL/MSIL/Converter.cs
+++ b/src/Neo.Compiler.MSIL/MSIL/Converter.cs
@@ -381,7 +381,7 @@ private void ConvertAddrInMethod(NeoMethod to)
                         try
                         {
                             var _addr = addrconv[c.srcaddr];
-                            Int32 addroff = (Int32)(_addr - c.addr);
+                            int addroff = (int)(_addr - c.addr);
                             c.bytes = BitConverter.GetBytes(addroff);
                             c.needfix = false;
                         }