diff --git a/Source/Project64-core/N64System/Recompiler/x86/x86RecompilerOps.cpp b/Source/Project64-core/N64System/Recompiler/x86/x86RecompilerOps.cpp
index 5403a8520..805bb03d4 100644
--- a/Source/Project64-core/N64System/Recompiler/x86/x86RecompilerOps.cpp
+++ b/Source/Project64-core/N64System/Recompiler/x86/x86RecompilerOps.cpp
@@ -6836,6 +6836,10 @@ void CX86RecompilerOps::SPECIAL_DADD()
         }
         else
         {
+            if (m_Opcode.rd == 0)
+            {
+                return;
+            }
             if (m_RegWorkingSet.IsMapped(m_Opcode.rd))
             {
                 m_RegWorkingSet.UnMap_GPR(m_Opcode.rd, false);
@@ -6865,10 +6869,25 @@ void CX86RecompilerOps::SPECIAL_DADD()
         asmjit::x86::Gp RegLo = m_RegWorkingSet.Map_TempReg(x86Reg_Unknown, source1, false, false);
         asmjit::x86::Gp RegHi = m_RegWorkingSet.Map_TempReg(x86Reg_Unknown, source1, true, false);
 
+        bool OverFlowCheck = true;
         if (m_RegWorkingSet.IsConst(source2))
         {
-            m_Assembler.AddConstToX86Reg(RegLo, m_RegWorkingSet.GetMipsRegLo(source2));
-            m_Assembler.adc(RegHi, m_RegWorkingSet.GetMipsRegHi(source2));
+            if (m_RegWorkingSet.GetMipsReg(source2) != 0)
+            {
+                if (m_RegWorkingSet.GetMipsRegLo(source2) != 0)
+                {
+                    m_Assembler.AddConstToX86Reg(RegLo, m_RegWorkingSet.GetMipsRegLo(source2));
+                    m_Assembler.adc(RegHi, m_RegWorkingSet.GetMipsRegHi(source2));
+                }
+                else
+                {
+                    m_Assembler.AddConstToX86Reg(RegHi, m_RegWorkingSet.GetMipsRegHi(source2));
+                }
+            }
+            else
+            {
+                OverFlowCheck = false;
+            }
         }
         else if (m_RegWorkingSet.IsMapped(source2))
         {
@@ -6881,14 +6900,17 @@ void CX86RecompilerOps::SPECIAL_DADD()
             m_Assembler.AddVariableToX86reg(RegLo, &m_Reg.m_GPR[source2].W[0], CRegName::GPR_Lo[source2]);
             m_Assembler.AdcVariableToX86reg(RegHi, &m_Reg.m_GPR[source2].W[1], CRegName::GPR_Hi[source2]);
         }
-        m_RegWorkingSet.SetBlockCycleCount(m_RegWorkingSet.GetBlockCycleCount() + g_System->CountPerOp());
-        CompileExit(m_CompilePC, m_CompilePC, m_RegWorkingSet, ExitReason_ExceptionOverflow, false, &CX86Ops::JoLabel);
-        m_RegWorkingSet.SetBlockCycleCount(m_RegWorkingSet.GetBlockCycleCount() - g_System->CountPerOp());
+        if (OverFlowCheck)
+        {
+            m_RegWorkingSet.SetBlockCycleCount(m_RegWorkingSet.GetBlockCycleCount() + g_System->CountPerOp());
+            CompileExit(m_CompilePC, m_CompilePC, m_RegWorkingSet, ExitReason_ExceptionOverflow, false, &CX86Ops::JoLabel);
+            m_RegWorkingSet.SetBlockCycleCount(m_RegWorkingSet.GetBlockCycleCount() - g_System->CountPerOp());
+        }
         if (m_Opcode.rd != 0)
         {
             m_RegWorkingSet.UnProtectGPR(source1);
             m_RegWorkingSet.UnProtectGPR(source2);
-            m_RegWorkingSet.Map_GPR_64bit(m_Opcode.rd, source1);
+            m_RegWorkingSet.Map_GPR_64bit(m_Opcode.rd, -1);
             m_Assembler.mov(m_RegWorkingSet.GetMipsRegMapLo(m_Opcode.rd), RegLo);
             m_Assembler.mov(m_RegWorkingSet.GetMipsRegMapHi(m_Opcode.rd), RegHi);
         }