diff --git a/image_dehazer/__init__.py b/image_dehazer/__init__.py
index 9c54b81..f4a414e 100644
--- a/image_dehazer/__init__.py
+++ b/image_dehazer/__init__.py
@@ -257,7 +257,7 @@ def __zero_pad(self, image, shape, position='corner'):
         shape = np.asarray(shape, dtype=int)
         imshape = np.asarray(image.shape, dtype=int)
 
-        if np.alltrue(imshape == shape):
+        if np.all(imshape == shape):
             return image
 
         if np.any(shape <= 0):
@@ -299,4 +299,4 @@ def remove_haze(HazeImg, airlightEstimation_windowSze=15, boundaryConstraint_win
                             regularize_lambda=regularize_lambda, sigma=sigma, delta=delta,
                             showHazeTransmissionMap=showHazeTransmissionMap)
     HazeCorrectedImg, HazeTransmissionMap = Dehazer.remove_haze(HazeImg)
-    return (HazeCorrectedImg, HazeTransmissionMap)
\ No newline at end of file
+    return (HazeCorrectedImg, HazeTransmissionMap)