diff --git a/CodeGen/src/IrLoweringX64.cpp b/CodeGen/src/IrLoweringX64.cpp
index 21031793..ca06ca15 100644
--- a/CodeGen/src/IrLoweringX64.cpp
+++ b/CodeGen/src/IrLoweringX64.cpp
@@ -962,10 +962,12 @@ void IrLoweringX64::lowerInst(IrInst& inst, uint32_t index, const IrBlock& next)
         break;
     }
     case IrCmd::DO_ARITH:
-        callArithHelper(regs, build, vmRegOp(inst.a),
-            inst.b.kind == IrOpKind::VmReg ? luauRegAddress(vmRegOp(inst.b)) : luauConstantAddress(vmConstOp(inst.b)),
-            inst.c.kind == IrOpKind::VmReg ? luauRegAddress(vmRegOp(inst.c)) : luauConstantAddress(vmConstOp(inst.c)), TMS(intOp(inst.d)));
+    {
+        OperandX64 opb = inst.b.kind == IrOpKind::VmReg ? luauRegAddress(vmRegOp(inst.b)) : luauConstantAddress(vmConstOp(inst.b));
+        OperandX64 opc = inst.c.kind == IrOpKind::VmReg ? luauRegAddress(vmRegOp(inst.c)) : luauConstantAddress(vmConstOp(inst.c));
+        callArithHelper(regs, build, vmRegOp(inst.a), opb, opc, TMS(intOp(inst.d)));
         break;
+    }
     case IrCmd::DO_LEN:
         callLengthHelper(regs, build, vmRegOp(inst.a), vmRegOp(inst.b));
         break;