diff --git a/cpu/decoder.cpp b/cpu/decoder.cpp
index 989e199..03e9eca 100644
--- a/cpu/decoder.cpp
+++ b/cpu/decoder.cpp
@@ -83,7 +83,7 @@ void Cpu::executeInstruction()
 
       mcycles = 4;
     }
-  else if((op & 0xC0) == 0x80) // ADD, ADC, SUB, ABC, CP, AND, OR, XOR
+  else if((op & 0xC0) == 0x80) // ADD, ADC, SUB, SBC, CP, AND, OR, XOR
     {
       AluOp aluop = (AluOp)((op >> 3) & 0x3);
       u8 reg = op & 0x7;