diff --git a/Instruction-Set.md b/Instruction-Set.md
index c6be5e7..14db424 100644
--- a/Instruction-Set.md
+++ b/Instruction-Set.md
@@ -877,7 +877,7 @@ destination = destination + 1
 | -------- | ------ | -------- | ----- | ---- | ---- | -------- | ----- |
 | `DEC destination` | `0x2B` |  `destination` : `mem` / `reg` |  `-`  |  `X` |  `X` |    `X`   |  `-`  |
 #### Description
-`DEC` adds one to the value of destination, replacing the previous value. Unlike [**SUB**](#sub) the carry flag is not modified. If you wish the carry flag to be modified then use `sub dest, 1` instead
+`DEC` subtracts one from the value of destination, replacing the previous value. Unlike [**SUB**](#sub) the carry flag is not modified. If you wish the carry flag to be modified then use `sub dest, 1` instead
 
 ### Pseudo code
 ```py