diff --git a/choix/utils.py b/choix/utils.py
index <HASH>..<HASH> 100644
--- a/choix/utils.py
+++ b/choix/utils.py
@@ -358,7 +358,7 @@ def compare(items, params, rank=False):
 
 
 def probabilities(items, params):
-    """Compute the comparison outcome probabilities.
+    """Compute the comparison outcome probabilities given a subset of items.
 
     This function computes, for each item in ``items``, the probability that it
     would win (i.e., be chosen) in a comparison involving the items, given
Improved dosctring for `probabilities`.

The docstring of the function `probabilities` was a little bit too
minimalistic. Now it states more clearly that it computes the distribution for
the subset of items passed as argument.