diff --git a/lifter/CommonDisassembler.hpp b/lifter/CommonDisassembler.hpp
index 82c5ee6..a3390e0 100644
--- a/lifter/CommonDisassembler.hpp
+++ b/lifter/CommonDisassembler.hpp
@@ -312,7 +312,7 @@ inline Register getRegOfSize(Register reg, uint8_t size) {
   case Register::R15W:
   case Register::R15D:
   case Register::R15:
-    return std::array{Register::R15B, Register::R15B, Register::R15D,
+    return std::array{Register::R15B, Register::R15W, Register::R15D,
                       Register::R15}[index];
 
   case Register::EFLAGS:
@@ -485,4 +485,4 @@ runDisassembler(T& dis, void* buffer, size_t size = 15) {
   return dis.disassemble(buffer, size);
 }
 
-#endif // COMMON_DISASSEMBLER_H
\ No newline at end of file
+#endif // COMMON_DISASSEMBLER_H