diff --git a/tutorial-contents/302_simple_classification.py b/tutorial-contents/302_simple_classification.py
index 13ba200..721eb24 100644
--- a/tutorial-contents/302_simple_classification.py
+++ b/tutorial-contents/302_simple_classification.py
@@ -17,9 +17,9 @@
 # fake data
 n_data = np.ones((100, 2))
 x0 = np.random.normal(2*n_data, 1)      # class0 x shape=(100, 2)
-y0 = np.zeros(100)                      # class0 y shape=(100, 1)
+y0 = np.zeros(100)                      # class0 y shape=(100, )
 x1 = np.random.normal(-2*n_data, 1)     # class1 x shape=(100, 2)
-y1 = np.ones(100)                       # class1 y shape=(100, 1)
+y1 = np.ones(100)                       # class1 y shape=(100, )
 x = np.vstack((x0, x1))  # shape (200, 2) + some noise
 y = np.hstack((y0, y1))  # shape (200, )
 
@@ -56,4 +56,4 @@
         plt.pause(0.1)
 
 plt.ioff()
-plt.show()
\ No newline at end of file
+plt.show()