diff --git a/FEXCore/Source/Interface/Core/OpcodeDispatcher.h b/FEXCore/Source/Interface/Core/OpcodeDispatcher.h
index a47602b24..31a72f9b9 100644
--- a/FEXCore/Source/Interface/Core/OpcodeDispatcher.h
+++ b/FEXCore/Source/Interface/Core/OpcodeDispatcher.h
@@ -89,7 +89,6 @@ class OpDispatchBuilder final : public IREmitter {
 public:
   enum class FlagsGenerationType : uint8_t {
     TYPE_NONE,
-    TYPE_SUB,
     TYPE_MUL,
     TYPE_UMUL,
     TYPE_LOGICAL,
@@ -2207,26 +2206,6 @@ private:
    *
    * Depending on the operation it may force a RFLAGs calculation before storing the new deferred state.
    * @{ */
-  void GenerateFlags_SUB(FEXCore::X86Tables::DecodedOp Op, Ref Src1, Ref Src2, bool UpdateCF = true) {
-    if (!UpdateCF) {
-      // If we aren't updating CF then we need to calculate flags. Invalidation mask would make this not required.
-      CalculateDeferredFlags();
-    }
-    CurrentDeferredFlags = DeferredFlagData {
-      .Type = FlagsGenerationType::TYPE_SUB,
-      .SrcSize = GetSrcSize(Op),
-      .Sources =
-        {
-          .TwoSrcImmediate =
-            {
-              .Src1 = Src1,
-              .Src2 = Src2,
-              .UpdateCF = UpdateCF,
-            },
-        },
-    };
-  }
-
   void GenerateFlags_MUL(FEXCore::X86Tables::DecodedOp Op, Ref Res, Ref High) {
     CurrentDeferredFlags = DeferredFlagData {
       .Type = FlagsGenerationType::TYPE_MUL,
diff --git a/FEXCore/Source/Interface/Core/OpcodeDispatcher/Flags.cpp b/FEXCore/Source/Interface/Core/OpcodeDispatcher/Flags.cpp
index 97b58699e..f29f64ff1 100644
--- a/FEXCore/Source/Interface/Core/OpcodeDispatcher/Flags.cpp
+++ b/FEXCore/Source/Interface/Core/OpcodeDispatcher/Flags.cpp
@@ -271,10 +271,6 @@ void OpDispatchBuilder::CalculateDeferredFlags(uint32_t FlagsToCalculateMask) {
   }
 
   switch (CurrentDeferredFlags.Type) {
-  case FlagsGenerationType::TYPE_SUB:
-    CalculateFlags_SUB(CurrentDeferredFlags.SrcSize, CurrentDeferredFlags.Sources.TwoSrcImmediate.Src1,
-                       CurrentDeferredFlags.Sources.TwoSrcImmediate.Src2, CurrentDeferredFlags.Sources.TwoSrcImmediate.UpdateCF);
-    break;
   case FlagsGenerationType::TYPE_MUL:
     CalculateFlags_MUL(CurrentDeferredFlags.SrcSize, CurrentDeferredFlags.Res, CurrentDeferredFlags.Sources.OneSource.Src1);
     break;