diff --git a/Instruction-Set.md b/Instruction-Set.md
index fc65193..703b4ef 100644
--- a/Instruction-Set.md
+++ b/Instruction-Set.md
@@ -32,7 +32,7 @@
 | **SUB** *destination*, *source* | *mem/reg*, *mem/reg/imm* |  0x03 |`X X X X -` |
 | **TEST** *destination*, *source* | *mem/reg*, *mem/reg/imm* |  0x0B |`0 X X 0 -` |
 | **XCHG** *destination*, *source* | *mem/reg*, *mem/reg* | 0x1F |`- - - - -` |
-| **XOR** *destination*, *source* | *mem/reg*, *mem/reg/imm* | 0x05 |`0 X X 0 -` |
+| **XOR** *destination*, *source* | *mem/reg*, *mem/reg/imm* | 0x26 |`0 X X 0 -` |
 
 *NEG instruction: CF is set to 0 if destination=0