diff --git a/README.md b/README.md
index e9097bc..324b670 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 swh-counters
 ===============
 
-Next generation counters for swh objects
+Service providing efficient estimates of the number of objects in the SWH archive, using
+Redis's Hyperloglog