diff --git a/Source/Project64-core/N64System/Recompiler/Arm/ArmOps.cpp b/Source/Project64-core/N64System/Recompiler/Arm/ArmOps.cpp
index d5b117ef5..92fa2e9e1 100644
--- a/Source/Project64-core/N64System/Recompiler/Arm/ArmOps.cpp
+++ b/Source/Project64-core/N64System/Recompiler/Arm/ArmOps.cpp
@@ -675,6 +675,31 @@ void CArmOps::ShiftLeftImmed(ArmReg DestReg, ArmReg SourceReg, uint32_t shift)
     AddCode16(op.Hex);
 }
 
+void CArmOps::SignExtendByte(ArmReg Reg)
+{
+    if (Reg > 0x7)
+    {
+        CPU_Message("      sxtb.w\t%s, %s", ArmRegName(Reg), ArmRegName(Reg));
+        Arm32Opcode op = {0};
+        op.rotate.opcode = 0xFA4F;
+        op.rotate.rm = Reg;
+        op.rotate.rotate = 0;
+        op.rotate.opcode2 = 2;
+        op.rotate.rd = Reg;
+        op.rotate.opcode3 = 0xF;
+        AddCode32(op.Hex);
+    }
+    else
+    {
+        CPU_Message("      sxtb\t%s, %s", ArmRegName(Reg), ArmRegName(Reg));
+        ArmThumbOpcode op = {0};
+        op.Reg2.rn = Reg;
+        op.Reg2.rm = Reg;
+        op.Reg2.opcode = 0x2C9;
+        AddCode16(op.Hex);
+    }
+}
+
 void CArmOps::StoreArmRegToArmRegPointer(ArmReg Reg, ArmReg RegPointer, uint8_t offset)
 {
     if (Reg > 0x7 || RegPointer > 0x7)
diff --git a/Source/Project64-core/N64System/Recompiler/Arm/ArmOps.h b/Source/Project64-core/N64System/Recompiler/Arm/ArmOps.h
index 68274ac21..c1bd01b99 100644
--- a/Source/Project64-core/N64System/Recompiler/Arm/ArmOps.h
+++ b/Source/Project64-core/N64System/Recompiler/Arm/ArmOps.h
@@ -166,6 +166,7 @@ protected:
     static void ShiftRightSignImmed(ArmReg DestReg, ArmReg SourceReg, uint32_t shift);
     static void ShiftRightUnsignImmed(ArmReg DestReg, ArmReg SourceReg, uint32_t shift);
     static void ShiftLeftImmed(ArmReg DestReg, ArmReg SourceReg, uint32_t shift);
+    static void SignExtendByte(ArmReg Reg);
     static void StoreArmRegToArmRegPointer(ArmReg Reg, ArmReg RegPointer, uint8_t offset);
     static void StoreFloatRegToArmRegPointer(ArmFpuSingle Reg, ArmReg RegPointer, uint8_t Offset);
     static void SubConstFromArmReg(ArmReg Reg, uint32_t Const);