diff --git a/src/SamplePreprocessor.py b/src/SamplePreprocessor.py
index 1d5ffd9a5b03b90fa173d1cf5977283e3f8d64e7..c82ff0a4c929f85ea2a9bedbcf611209f2072306 100644
--- a/src/SamplePreprocessor.py
+++ b/src/SamplePreprocessor.py
@@ -75,7 +75,7 @@ if __name__ == '__main__':
     import matplotlib.pyplot as plt
 
     img = cv2.imread('../data/test.png', cv2.IMREAD_GRAYSCALE)
-    img_aug = preprocess(img, (128, 32), False)
+    img_aug = preprocess(img, (128, 32), True)
     plt.subplot(121)
     plt.imshow(img, cmap='gray')
     plt.subplot(122)