diff --git a/skimage/transform/radon_transform.py b/skimage/transform/radon_transform.py
index 0f26e343..ff3af596 100644
--- a/skimage/transform/radon_transform.py
+++ b/skimage/transform/radon_transform.py
@@ -413,5 +413,5 @@ def iradon_sart(radon_image, theta=None, image=None, projection_shifts=None,
                                               projection_shifts[angle_index])
         image += relaxation * image_update
         if not clip is None:
-            image = clip(image, clip[0], clip[1])
+            image = np.clip(image, clip[0], clip[1])
     return image
diff --git a/skimage/transform/tests/test_radon_transform.py b/skimage/transform/tests/test_radon_transform.py
index 74d20a24..11fced56 100644
--- a/skimage/transform/tests/test_radon_transform.py
+++ b/skimage/transform/tests/test_radon_transform.py
@@ -347,6 +347,9 @@ def test_iradon_sart():
         delta = np.mean(np.abs(reconstructed - image))
         print('delta (2 iterations) =', delta)
         assert delta < 0.013 * error_factor
+        reconstructed = iradon_sart(sinogram, theta, clip=(0, 1))
+        print('delta (1 iteration, clip) =', delta)
+        assert delta < 0.013 * error_factor
 
         np.random.seed(1239867)
         shifts = np.random.uniform(-3, 3, sinogram.shape[1])