diff --git a/src/dynarmic/backend/x64/reg_alloc.cpp b/src/dynarmic/backend/x64/reg_alloc.cpp
index 9eef8143..487194e2 100644
--- a/src/dynarmic/backend/x64/reg_alloc.cpp
+++ b/src/dynarmic/backend/x64/reg_alloc.cpp
@@ -410,7 +410,7 @@ void RegAlloc::HostCall(IR::Inst* result_def,
     for (size_t i = 0; i < args_count; i++) {
         if (args[i] && !args[i]->get().IsVoid()) {
             UseScratch(*args[i], args_hostloc[i]);
-#if defined(__llvm__) && !defined(_WIN32)
+
             // LLVM puts the burden of zero-extension of 8 and 16 bit values on the caller instead of the callee
             const Xbyak::Reg64 reg = HostLocToReg64(args_hostloc[i]);
             switch (args[i]->get().GetType()) {
@@ -420,10 +420,12 @@ void RegAlloc::HostCall(IR::Inst* result_def,
             case IR::Type::U16:
                 code.movzx(reg.cvt32(), reg.cvt16());
                 break;
+            case IR::Type::U32:
+                code.mov(reg.cvt32(), reg.cvt32());
+                break;
             default:
                 break;  // Nothing needs to be done
             }
-#endif
         }
     }