diff --git a/ch02/nand_gate.py b/ch02/nand_gate.py
index 730520671..a563ab9f4 100644
--- a/ch02/nand_gate.py
+++ b/ch02/nand_gate.py
@@ -1,7 +1,7 @@
 # coding: utf-8
 import numpy as np
 
-
+#branch에 들어갈 내용임
 def NAND(x1, x2):
     x = np.array([x1, x2])
     w = np.array([-0.5, -0.5])