diff --git a/tutorial-contents/406_GAN.py b/tutorial-contents/406_GAN.py
index 2968b79..42e29de 100644
--- a/tutorial-contents/406_GAN.py
+++ b/tutorial-contents/406_GAN.py
@@ -27,6 +27,7 @@ PAINT_POINTS = np.vstack([np.linspace(-1, 1, ART_COMPONENTS) for _ in range(BATC
 # show our beautiful painting range
 plt.plot(PAINT_POINTS[0], 2 * np.power(PAINT_POINTS[0], 2) + 1, c='#74BCFF', lw=3, label='upper bound')
 plt.plot(PAINT_POINTS[0], 1 * np.power(PAINT_POINTS[0], 2) + 0, c='#FF9359', lw=3, label='lower bound')
+plt.legend(loc='upper right')
 plt.show()