diff --git a/Instruction-Set.md b/Instruction-Set.md
index dbdf843..94b95f5 100644
--- a/Instruction-Set.md
+++ b/Instruction-Set.md
@@ -84,8 +84,8 @@ See the Pseduo-Instructions reference in [Assembler](https://git.zxq5.dev/LowLev
 | 0x14 | R    | CMP      | Reg1, Reg2 | Compares the value of Reg1 to the value in Reg2. The results of the comparisons are set in the Status register. |
 | 0x15 | R    | INC      | Reg | Increments the value in the given register. |
 | 0x16 | R    | DEC      | Reg | Decrements the value in the given register. |
-| 0x17 | I    | SHL      | Reg, Literal \| ValReg | Left shifts the value in Reg by the given amount (either a register, or a literal value). |
-| 0x18 | I    | SHR      | Reg, Literal \| ValReg | Right shifts the value in Reg by the given amount (either a register, or a literal value). |
+| 0x17 | R    | SHL      | Reg, Literal \| ValReg | Left shifts the value in Reg by the given amount (either a register, or a literal value). |
+| 0x18 | R    | SHR      | Reg, Literal \| ValReg | Right shifts the value in Reg by the given amount (either a register, or a literal value). |
 | 0x19 | R    | ADD      | Src1, Src2, Dest | Adds the value of Src2 to Src1 and writes the result to Dest. |
 | 0x1A | R    | SUB      | Src1, Src2, Dest | Subtracts the value of Src2 from Src1 and writes the result to Dest. |
 | 0x1B | R    | AND      | Src1, Src2, Dest | Performs bitwise AND on Src1 and Src2 storing the result in Dest. |