diff --git a/skimage/thresholding/thresholding.py b/skimage/thresholding/thresholding.py
index e346efba..131d33e7 100644
--- a/skimage/thresholding/thresholding.py
+++ b/skimage/thresholding/thresholding.py
@@ -17,8 +17,8 @@ def threshold_otsu(image, bins=256):
 
     Returns
     -------
-    threshold : numeric
-        Threshold value. int or float depending on input image.
+    threshold : float
+        Threshold value.
 
     References
     ----------