diff --git a/insns/InsnSlli.py b/insns/InsnSlli.py
index 0292cfa..f292ce8 100644
--- a/insns/InsnSlli.py
+++ b/insns/InsnSlli.py
@@ -1,5 +1,9 @@
 from InsnRV32IITypeShift import *
 
+"""
+SLLI instruction
+"""
+
 class InsnSlli(InsnRV32IITypeShift):
     def __init__(self, RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED):
         super().__init__(RISCV_FORMAL_ILEN, RISCV_FORMAL_XLEN, RISCV_FORMAL_CSR_MISA, RISCV_FORMAL_COMPRESSED, 0b000000, 0b001)