diff --git a/skimage/feature/corner.py b/skimage/feature/corner.py
index 08d4cfd7..fef9b046 100644
--- a/skimage/feature/corner.py
+++ b/skimage/feature/corner.py
@@ -610,7 +610,7 @@ def corner_fast(image, n=12, threshold=0.15):
            [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
            [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
            [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]])
-    >>> corner_peaks(corner_fast(square, 9), min_distance=1)
+    >>> corner_peaks(corner_fast(square, 9), min_distance=1, threshold_rel=0.1)
     array([[3, 3],
            [3, 8],
            [8, 3],