diff --git a/tf_pwa/adaptive_bins.py b/tf_pwa/adaptive_bins.py
index d91643e..97674be 100644
--- a/tf_pwa/adaptive_bins.py
+++ b/tf_pwa/adaptive_bins.py
@@ -83,7 +83,7 @@ def single_split_bound(data, n=2, base_bound=None):
         >>> data = np.array([1.0, 2.0, 1.4, 3.1])
         >>> bound = AdaptiveBound.single_split_bound(data)
         >>> [(float(i[0]+1e-6), float(i[1]+1e-6)) for i in bound]
-        [(1.0, 1.7...), (1.7..., 3.1...)]
+        [(1.0..., 1.7...), (1.7..., 3.1...)]
 
         """
         if base_bound is None: