diff --git a/FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp b/FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
index 68a9a0def..8c7930a16 100644
--- a/FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
+++ b/FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
@@ -5253,7 +5253,7 @@ void OpDispatchBuilder::ALUOpImpl(OpcodeArgs, FEXCore::IR::IROps ALUIROp, FEXCor
     GenerateFlags_ADD(Op, Result, Dest, Src);
   break;
   case FEXCore::IR::IROps::OP_SUB:
-    GenerateFlags_SUB(Op, Dest, Src);
+    Result = CalculateFlags_SUB(Size, Dest, Src);
   break;
   case FEXCore::IR::IROps::OP_XOR:
   case FEXCore::IR::IROps::OP_OR: {