diff --git a/src/Assembler/Core/Compiler.hpp b/src/Assembler/Core/Compiler.hpp
index c3aad60a..bc7300a7 100644
--- a/src/Assembler/Core/Compiler.hpp
+++ b/src/Assembler/Core/Compiler.hpp
@@ -153,6 +153,7 @@ namespace HCAsm {
       case Registers::X7:
       case Registers::XBP:
       case Registers::XSP:
+      case Registers::XIP:
         return Mode::b64;
       case Registers::XH0:
       case Registers::XH1: