diff --git a/utils/srandmember/README.md b/utils/srandmember/README.md
index e6dae5ba..d3da1e82 100644
--- a/utils/srandmember/README.md
+++ b/utils/srandmember/README.md
@@ -1,2 +1,14 @@
-This utility plots the distribution of SRANDMEMBER to evaluate how fair it is.
-See http://theshfl.com/redis_sets for more information on the topic.
+The utilities in this directory plot the distribution of SRANDMEMBER to
+evaluate how fair it is.
+
+See http://theshfl.com/redis_sets for more information on the topic that lead
+to such investigation fix.
+
+showdist.rb -- shows the distribution of the frequency elements are returned.
+               The x axis is the number of times elements were returned, and
+               the y axis is how many elements were returned with such
+               frequency.
+
+showfreq.rb -- shows the frequency each element was returned.
+               The x axis is the element number.
+               The y axis is the times it was returned.